Here is what happened when I told Alexa "open Master Bedroom blinds."
The blinds did in fact open, and position says 100 and window shade: says "open" in the device page.
dev:20862021-08-17 09:28:38.526 pm traceupdateWindowShadeOpening
dev:20862021-08-17 09:28:38.523 pm debugparse: opening
dev:20862021-08-17 09:28:38.519 pm traceparseSetDataResponse: descMap=[raw:catchall: 0104 EF00 01 01 0040 00 C5B9 01 00 0000 02 01 00000104000100, profileId:0104, clusterId:EF00, clusterInt:61184, sourceEndpoint:01, destinationEndpoint:01, options:0040, messageType:00, dni:C5B9, isClusterSpecific:true, isManufacturerSpecific:false, manufacturerId:0000, command:02, direction:01, data:[00, 00, 01, 04, 00, 01, 00]]
dev:20862021-08-17 09:28:38.491 pm tracecheckHeartbeat: waitMillis=3999998
dev:20862021-08-17 09:28:38.487 pm debugupdatePresence: present=true
dev:20862021-08-17 09:28:38.398 pm traceisWithinOne: position=100, lastPosition=100
dev:20862021-08-17 09:28:38.395 pm debugupdatePosition: position=100
dev:20862021-08-17 09:28:38.392 pm debugupdateWindowShadeArrived: position=100
dev:20862021-08-17 09:28:38.389 pm debugparse: arrived at position 100
dev:20862021-08-17 09:28:38.385 pm traceparseSetDataResponse: descMap=[raw:catchall: 0104 EF00 01 01 0040 00 C5B9 01 00 0000 02 01 00000302000400000064, profileId:0104, clusterId:EF00, clusterInt:61184, sourceEndpoint:01, destinationEndpoint:01, options:0040, messageType:00, dni:C5B9, isClusterSpecific:true, isManufacturerSpecific:false, manufacturerId:0000, command:02, direction:01, data:[00, 00, 03, 02, 00, 04, 00, 00, 00, 64]]
dev:20862021-08-17 09:28:38.353 pm tracecheckHeartbeat: waitMillis=3999997
dev:20862021-08-17 09:28:38.349 pm debugupdatePresence: present=true
dev:20872021-08-17 09:28:38.217 pm traceupdateWindowShadeOpening
dev:20872021-08-17 09:28:38.214 pm debugparse: opening
dev:20872021-08-17 09:28:38.206 pm traceparseSetDataResponse: descMap=[raw:catchall: 0104 EF00 01 01 0040 00 4438 01 00 0000 02 01 00000104000100, profileId:0104, clusterId:EF00, clusterInt:61184, sourceEndpoint:01, destinationEndpoint:01, options:0040, messageType:00, dni:4438, isClusterSpecific:true, isManufacturerSpecific:false, manufacturerId:0000, command:02, direction:01, data:[00, 00, 01, 04, 00, 01, 00]]
dev:20872021-08-17 09:28:38.178 pm tracecheckHeartbeat: waitMillis=3999997
dev:20872021-08-17 09:28:38.174 pm debugupdatePresence: present=true
dev:20892021-08-17 09:28:38.106 pm traceupdateWindowShadeOpening
dev:20892021-08-17 09:28:38.103 pm debugparse: opening
dev:20892021-08-17 09:28:38.099 pm traceparseSetDataResponse: descMap=[raw:catchall: 0104 EF00 01 01 0040 00 2C9C 01 00 0000 02 01 00000104000100, profileId:0104, clusterId:EF00, clusterInt:61184, sourceEndpoint:01, destinationEndpoint:01, options:0040, messageType:00, dni:2C9C, isClusterSpecific:true, isManufacturerSpecific:false, manufacturerId:0000, command:02, direction:01, data:[00, 00, 01, 04, 00, 01, 00]]
dev:20872021-08-17 09:28:38.080 pm traceisWithinOne: position=100, lastPosition=100
dev:20872021-08-17 09:28:38.077 pm debugupdatePosition: position=100
dev:20872021-08-17 09:28:38.074 pm debugupdateWindowShadeArrived: position=100
dev:20872021-08-17 09:28:38.071 pm debugparse: arrived at position 100
dev:20872021-08-17 09:28:38.067 pm traceparseSetDataResponse: descMap=[raw:catchall: 0104 EF00 01 01 0040 00 4438 01 00 0000 02 01 00000302000400000064, profileId:0104, clusterId:EF00, clusterInt:61184, sourceEndpoint:01, destinationEndpoint:01, options:0040, messageType:00, dni:4438, isClusterSpecific:true, isManufacturerSpecific:false, manufacturerId:0000, command:02, direction:01, data:[00, 00, 03, 02, 00, 04, 00, 00, 00, 64]]
dev:20892021-08-17 09:28:38.059 pm tracecheckHeartbeat: waitMillis=3999998
dev:20892021-08-17 09:28:38.051 pm debugupdatePresence: present=true
dev:20872021-08-17 09:28:38.036 pm tracecheckHeartbeat: waitMillis=3999997
dev:20872021-08-17 09:28:38.032 pm debugupdatePresence: present=true
dev:20892021-08-17 09:28:37.960 pm traceisWithinOne: position=100, lastPosition=100
dev:20892021-08-17 09:28:37.957 pm debugupdatePosition: position=100
dev:20892021-08-17 09:28:37.954 pm debugupdateWindowShadeArrived: position=100
dev:20892021-08-17 09:28:37.950 pm debugparse: arrived at position 100
dev:20892021-08-17 09:28:37.947 pm traceparseSetDataResponse: descMap=[raw:catchall: 0104 EF00 01 01 0040 00 2C9C 01 00 0000 02 01 00000302000400000064, profileId:0104, clusterId:EF00, clusterInt:61184, sourceEndpoint:01, destinationEndpoint:01, options:0040, messageType:00, dni:2C9C, isClusterSpecific:true, isManufacturerSpecific:false, manufacturerId:0000, command:02, direction:01, data:[00, 00, 03, 02, 00, 04, 00, 00, 00, 64]]
dev:20892021-08-17 09:28:37.918 pm tracecheckHeartbeat: waitMillis=3999998
dev:20892021-08-17 09:28:37.914 pm debugupdatePresence: present=true
dev:20862021-08-17 09:28:34.841 pm debugupdateSpeed: speed=40
dev:20862021-08-17 09:28:34.836 pm debugparse: speed=40
dev:20862021-08-17 09:28:34.833 pm traceparseSetDataResponse: descMap=[raw:catchall: 0104 EF00 01 01 0040 00 C5B9 01 00 0000 02 01 00006902000400000028, profileId:0104, clusterId:EF00, clusterInt:61184, sourceEndpoint:01, destinationEndpoint:01, options:0040, messageType:00, dni:C5B9, isClusterSpecific:true, isManufacturerSpecific:false, manufacturerId:0000, command:02, direction:01, data:[00, 00, 69, 02, 00, 04, 00, 00, 00, 28]]
dev:20862021-08-17 09:28:34.803 pm tracecheckHeartbeat: waitMillis=3999997
dev:20862021-08-17 09:28:34.799 pm debugupdatePresence: present=true
dev:20862021-08-17 09:28:34.713 pm traceupdateWindowShadeClosing
dev:20862021-08-17 09:28:34.710 pm debugparse: closing
dev:20862021-08-17 09:28:34.703 pm traceparseSetDataResponse: descMap=[raw:catchall: 0104 EF00 01 01 0040 00 C5B9 01 00 0000 02 01 00000104000102, profileId:0104, clusterId:EF00, clusterInt:61184, sourceEndpoint:01, destinationEndpoint:01, options:0040, messageType:00, dni:C5B9, isClusterSpecific:true, isManufacturerSpecific:false, manufacturerId:0000, command:02, direction:01, data:[00, 00, 01, 04, 00, 01, 02]]
dev:20862021-08-17 09:28:34.675 pm tracecheckHeartbeat: waitMillis=3999998
dev:20862021-08-17 09:28:34.671 pm debugupdatePresence: present=true
dev:20862021-08-17 09:28:34.572 pm traceisWithinOne: position=100, lastPosition=100
dev:20862021-08-17 09:28:34.569 pm debugupdatePosition: position=100
dev:20862021-08-17 09:28:34.566 pm debugupdateWindowShadeMoving: position=100, lastPosition=100
dev:20862021-08-17 09:28:34.563 pm debugparse: moving to position 100
dev:20862021-08-17 09:28:34.559 pm traceparseSetDataResponse: descMap=[raw:catchall: 0104 EF00 01 01 0040 00 C5B9 01 00 0000 02 01 00000202000400000064, profileId:0104, clusterId:EF00, clusterInt:61184, sourceEndpoint:01, destinationEndpoint:01, options:0040, messageType:00, dni:C5B9, isClusterSpecific:true, isManufacturerSpecific:false, manufacturerId:0000, command:02, direction:01, data:[00, 00, 02, 02, 00, 04, 00, 00, 00, 64]]
dev:20862021-08-17 09:28:34.530 pm tracecheckHeartbeat: waitMillis=3999997
dev:20862021-08-17 09:28:34.526 pm debugupdatePresence: present=true
dev:20872021-08-17 09:28:34.470 pm debugupdateSpeed: speed=40
dev:20872021-08-17 09:28:34.467 pm debugparse: speed=40
dev:20872021-08-17 09:28:34.457 pm traceparseSetDataResponse: descMap=[raw:catchall: 0104 EF00 01 01 0040 00 4438 01 00 0000 02 01 00006902000400000028, profileId:0104, clusterId:EF00, clusterInt:61184, sourceEndpoint:01, destinationEndpoint:01, options:0040, messageType:00, dni:4438, isClusterSpecific:true, isManufacturerSpecific:false, manufacturerId:0000, command:02, direction:01, data:[00, 00, 69, 02, 00, 04, 00, 00, 00, 28]]
dev:20862021-08-17 09:28:34.430 pm traceparse: ACK command=0
dev:20872021-08-17 09:28:34.426 pm tracecheckHeartbeat: waitMillis=3999998
dev:20872021-08-17 09:28:34.423 pm debugupdatePresence: present=true
dev:20862021-08-17 09:28:34.400 pm tracecheckHeartbeat: waitMillis=3999995
dev:20862021-08-17 09:28:34.394 pm debugupdatePresence: present=true
dev:20872021-08-17 09:28:34.360 pm traceupdateWindowShadeClosing
dev:20872021-08-17 09:28:34.357 pm debugparse: closing
dev:20872021-08-17 09:28:34.354 pm traceparseSetDataResponse: descMap=[raw:catchall: 0104 EF00 01 01 0040 00 4438 01 00 0000 02 01 00000104000102, profileId:0104, clusterId:EF00, clusterInt:61184, sourceEndpoint:01, destinationEndpoint:01, options:0040, messageType:00, dni:4438, isClusterSpecific:true, isManufacturerSpecific:false, manufacturerId:0000, command:02, direction:01, data:[00, 00, 01, 04, 00, 01, 02]]
dev:20872021-08-17 09:28:34.294 pm tracecheckHeartbeat: waitMillis=3999998
dev:20872021-08-17 09:28:34.289 pm debugupdatePresence: present=true
dev:20872021-08-17 09:28:34.095 pm traceisWithinOne: position=100, lastPosition=100
dev:20872021-08-17 09:28:34.092 pm debugupdatePosition: position=100
dev:20872021-08-17 09:28:34.089 pm debugupdateWindowShadeMoving: position=100, lastPosition=100
dev:20872021-08-17 09:28:34.086 pm debugparse: moving to position 100
dev:20872021-08-17 09:28:34.082 pm traceparseSetDataResponse: descMap=[raw:catchall: 0104 EF00 01 01 0040 00 4438 01 00 0000 02 01 00000202000400000064, profileId:0104, clusterId:EF00, clusterInt:61184, sourceEndpoint:01, destinationEndpoint:01, options:0040, messageType:00, dni:4438, isClusterSpecific:true, isManufacturerSpecific:false, manufacturerId:0000, command:02, direction:01, data:[00, 00, 02, 02, 00, 04, 00, 00, 00, 64]]
dev:20872021-08-17 09:28:34.051 pm tracecheckHeartbeat: waitMillis=3999998
dev:20872021-08-17 09:28:34.047 pm debugupdatePresence: present=true
dev:20872021-08-17 09:28:34.015 pm traceparse: ACK command=0
dev:20872021-08-17 09:28:33.986 pm tracecheckHeartbeat: waitMillis=3999997
dev:20872021-08-17 09:28:33.982 pm debugupdatePresence: present=true
dev:20892021-08-17 09:28:33.873 pm debugupdateSpeed: speed=40
dev:20892021-08-17 09:28:33.869 pm debugparse: speed=40
dev:20892021-08-17 09:28:33.866 pm traceparseSetDataResponse: descMap=[raw:catchall: 0104 EF00 01 01 0040 00 2C9C 01 00 0000 02 01 00006902000400000028, profileId:0104, clusterId:EF00, clusterInt:61184, sourceEndpoint:01, destinationEndpoint:01, options:0040, messageType:00, dni:2C9C, isClusterSpecific:true, isManufacturerSpecific:false, manufacturerId:0000, command:02, direction:01, data:[00, 00, 69, 02, 00, 04, 00, 00, 00, 28]]
dev:20892021-08-17 09:28:33.835 pm tracecheckHeartbeat: waitMillis=3999998
dev:20892021-08-17 09:28:33.831 pm debugupdatePresence: present=true
dev:20892021-08-17 09:28:33.749 pm traceupdateWindowShadeClosing
dev:20892021-08-17 09:28:33.746 pm debugparse: closing
dev:20892021-08-17 09:28:33.742 pm traceparseSetDataResponse: descMap=[raw:catchall: 0104 EF00 01 01 0040 00 2C9C 01 00 0000 02 01 00000104000102, profileId:0104, clusterId:EF00, clusterInt:61184, sourceEndpoint:01, destinationEndpoint:01, options:0040, messageType:00, dni:2C9C, isClusterSpecific:true, isManufacturerSpecific:false, manufacturerId:0000, command:02, direction:01, data:[00, 00, 01, 04, 00, 01, 02]]
dev:20892021-08-17 09:28:33.711 pm tracecheckHeartbeat: waitMillis=3999997
dev:20892021-08-17 09:28:33.707 pm debugupdatePresence: present=true
dev:20892021-08-17 09:28:33.619 pm traceisWithinOne: position=100, lastPosition=100
dev:20892021-08-17 09:28:33.616 pm debugupdatePosition: position=100
dev:20892021-08-17 09:28:33.613 pm debugupdateWindowShadeMoving: position=100, lastPosition=100
dev:20892021-08-17 09:28:33.610 pm debugparse: moving to position 100
dev:20892021-08-17 09:28:33.606 pm traceparseSetDataResponse: descMap=[raw:catchall: 0104 EF00 01 01 0040 00 2C9C 01 00 0000 02 01 00000202000400000064, profileId:0104, clusterId:EF00, clusterInt:61184, sourceEndpoint:01, destinationEndpoint:01, options:0040, messageType:00, dni:2C9C, isClusterSpecific:true, isManufacturerSpecific:false, manufacturerId:0000, command:02, direction:01, data:[00, 00, 02, 02, 00, 04, 00, 00, 00, 64]]
dev:20892021-08-17 09:28:33.571 pm tracecheckHeartbeat: waitMillis=3999997
dev:20892021-08-17 09:28:33.567 pm debugupdatePresence: present=true
dev:20892021-08-17 09:28:33.509 pm traceparse: ACK command=0
dev:20892021-08-17 09:28:33.468 pm tracecheckHeartbeat: waitMillis=3999997
dev:20892021-08-17 09:28:33.462 pm debugupdatePresence: present=true
dev:20872021-08-17 09:28:33.377 pm tracesendTuyaCommand: message=8F9B0202000400000064
dev:20872021-08-17 09:28:33.374 pm tracesendTuyaCommand: dp=0x02, dpType=0x02, fnCmd=0x00000064, fnCmdLength=8
dev:20872021-08-17 09:28:33.368 pm tracecheckForResponse: waitMillis=59994
dev:20872021-08-17 09:28:33.364 pm tracecheckForResponse: waitingForResponseSinceMillis=1629253713352
dev:20872021-08-17 09:28:33.361 pm traceisWithinOne: position=100, lastPosition=0
dev:20872021-08-17 09:28:33.357 pm debugsetPosition: position=100
dev:20872021-08-17 09:28:33.352 pm debugopen
dev:20862021-08-17 09:28:33.342 pm tracesendTuyaCommand: message=813A0202000400000064
dev:20862021-08-17 09:28:33.338 pm tracesendTuyaCommand: dp=0x02, dpType=0x02, fnCmd=0x00000064, fnCmdLength=8
dev:20862021-08-17 09:28:33.324 pm tracecheckForResponse: waitMillis=59996
dev:20862021-08-17 09:28:33.320 pm tracecheckForResponse: waitingForResponseSinceMillis=1629253713303
dev:20862021-08-17 09:28:33.316 pm traceisWithinOne: position=100, lastPosition=0
dev:20862021-08-17 09:28:33.303 pm debugsetPosition: position=100
dev:20862021-08-17 09:28:33.299 pm debugopen
dev:20892021-08-17 09:28:33.277 pm tracesendTuyaCommand: message=D5A90202000400000064
dev:20892021-08-17 09:28:33.274 pm tracesendTuyaCommand: dp=0x02, dpType=0x02, fnCmd=0x00000064, fnCmdLength=8
dev:20892021-08-17 09:28:33.261 pm tracecheckForResponse: waitMillis=59994
dev:20892021-08-17 09:28:33.257 pm tracecheckForResponse: waitingForResponseSinceMillis=1629253713249
dev:20892021-08-17 09:28:33.250 pm traceisWithinOne: position=100, lastPosition=0
dev:20892021-08-17 09:28:33.247 pm debugsetPosition: position=100
dev:20892021-08-17 09:28:33.239 pm debugopen
app:10082021-08-17 09:28:33.186 pm infoMaster Bedroom Blinds Open Triggered
app:10082021-08-17 09:28:33.181 pm infoMaster Bedroom Blinds Open: Master Bedroom Blinds windowShade open
dev:20882021-08-17 09:28:33.050 pm infoMaster Bedroom Blinds was turned on
dev:20882021-08-17 09:28:33.044 pm infoMaster Bedroom Blinds is open
dev:20882021-08-17 09:28:33.037 pm infoMaster Bedroom Blinds was set to 100%