My Xfinity account website/app is not loading correctly

I’m a new customer since Sunday, 7/25/21 and it’s been almost a week I haven’t able to activate my service. The first day I was able to login and view my account using my personal cellular service because my WiFi wasn’t activated. A tech came by on Wednesday to install everything and told me that I was able to do the rest on my phone after certain minutes.Then I spoke to the Rep and they said I need to login using a device with better data speed to load it up. Well, I use three devices with good internet connection including my own phone and still kept saying “Sorry page not loading correctly“ on every device. So I cleared my website cache and used different browsers from what I was researching, still didn’t work. I tried the app and It takes me right back to the login home page whenever I enter it in. My password is correct and everything. I even changed it twice to make sure that wasn’t the problem. Is the Xfinity website broken or something because it’s been this long and I still haven’t gotten my internet started!