To finish out this thread and in case others run into this problem, I have found the cause of the cloud connection problem. Using the Synology Router RT2600AC and probably other Synology products, within the Network Center there is a section for DoS Protection. It is enabled by default and was locking out my Hubitat's from connecting to the cloud. Disabling DoS corrected the connectivity problems. It was also blocking a Raspberry Pi running Node-Red.
Download the Hubitat app
