I understand... That's what's weird. I am 100 percent sure I do not have Comcast internet only tv at this location. I use tmobile home Internet. If I'm putting junk in the login credentials your would it even know what account and whether auto auth is in or off? It's not a real account in that case. That's why it seems like it's not even getting to login... Cuz would it not says auth failed instead?
I will check with Xfinity and see if there are multiple accounts for some reason. But the login works at nbc.com/live so i think I've got the right credentials and I verified auto auth is off for those credentials.
Thanks so much for your help btw.