This issue was just brought to my team's attention. First, I'm really disappointed to hear about your experience with getting this set up and the frustration it has caused.
If you don't mind providing a few extra details via a Private Message, I can get this taken care of immediately:
1. The Comcast email you used to activate the XH system
2. Was Thursday the only time this happened or is it still happening today?
3. Were any recent changes made to any of your Comcast services?
Thank you for your patience as we get this resolved.