I just bought one of these, had the same issues. I finally got this to work, as i guess a temporary measure until Hubitat fixes it:
Include the device with no authentication at all, uncheck all boxes. The device also has some advanced functions not listed in the paper manual. After everything is connected, you will want to press the button for 2-5 seconds to wakeup the device, allowing you to set and save the prefrences, such as disabling the LED light whenever the door opens/closes, or inverting the open/close reporting state. I also set the wakeup mode again and then hit use the configure command.
After that's been all done, the sensor is reporting reliably and quickly. Yes, this means no authentication, but at least it's working for now.
