Sorry we're having trouble app ridiculousness

Replaced my xfi gateway modem today and that is where my problems began. At first my xfinity app wasn't prompting me to activate new equipment like it has in the past so I had to call and speak with customer service who was unable to help connect service, so a service technician was going to be dispatched to my residence to fix the problem. I then get a call from the advance support team where they were able to get the gateway connected just by changing the name and password, but now the xfi app wouldn't let me log in I kept getting a "Sorry we're having trouble" prompting me to sign out. The representative seemed to have the attitude that the app wasn't her problem and that she had done her job by fixing the connection issue and canceled my service appointment after wishing me a good day. I have pods that need to be connected and in order to do so I need the app working. I call customer service again and do all the troubleshooting issues with the app i.e force stop,uninstall&reinstall, restart phone everything to no avail. This was done on 3 different devices, then am told that a tech needs to come check the lines(in 4 days) because that might be a reason why the app isn't working. I did some research and seen threads on reddit about account linking and service addresses being correct which after checking didnt apply to me. I can log into xfinity through web browser I can log into myXfinityaccount app I can log into xfinity stream all fine but for some reason no matter what I do when I try the xfi app it shows a little guy on a bike riding across a cityscape animation saying "checking things out" then seconds later "Sorry we're having trouble" and promps me to sign out. I wasn't having this problem until today when I changed equipment. So what changed?