xfinity streaming home use/roku - not working

In my home (Houston) we have xfinity service, 1 cable box and several other TV's that just have Roku sticks and the xfinity stream app....it was all working fine before Thanksgiving week then...all TVs with Roku requested a new sign up (had to go through the authorization code process)...did that, one of the TVs worked, another went to the app but you could only access "purchases" (no live TV, etc.)...after an hour on the phone with Xfinity and 3 hours with a tech in our home NONE of the streaming TVs work!!!

In a condo/townhome (Colorado) we have xfinity as well, all streaming on the TV, again before TG week all was fine, then some of the TVs did the "authorize"  thing and then stopped working giving me an error code of 403-102 saying this device can only access stream on your inhome WiFi which is all it is attached to...can;t wait to call xfinity and have them mess up the one not working!!!!