I am not sure how it was set up that way. I think you are correct @ComcastJohnathan that the system currently may not allow a single telephone number to be associated with two identities (email addresses) even on the same account, but apparently that was possible at some point. For example, a single account with email addresses for Mom, Dad, and a couple of kids might be tied to one address and phone number (at least before everyone had their own phone). I have one account at one address with identies for 4 family members. Occasionally after a power outage, Comcast would not recognize that my modem was online (even though it was) and the Xfinity Stream app only gave me the Exit App or Sign Out options and implied I was not connected to my home WiFi. All other smart TV apps/channels worked. The TV is only connected via WiFi ... no hard wired cable ... although I do have cable service and an Xfinity box connected to another TV the house. All I know is that after numerous fruitless calls to tech support and system reboots (modem, router, tv), deleting the phone number from the non-primary identity fixed everything. I can no longer verify how the numbers were set up in each identity, but there was only one phone number. It may have been a contact number in one identity and a 2FA number in the other or possibly a contact number in both.
... View more
One Case Cracked: I also had the problem with the Xfinity Stream app on a Sharp Roku TV that only gave me the Exit App or Sign Out options (not the "You have not purchased anything" screen). I have one account but with 4 associated email addresses. The contact number on email4 was the same as the one on the primary name, email1. This was not a 2FA number. The Fix: I deleted the contact number for email4. I do not know if it was necessary, but I also deleted and reinstalled the app. Upon restarting the app, the terms and conditions screen came up and the app worked perfectly. As a bonus, Comcast acknowledged on my online account that my modem was connected (which it was but had slow download speeds) and my download speed increased to 240 Mbs. Pinging @ComcastJonathan
... View more