Xfinity wifi hotspot user name and password saying doesn't match

I try to login the xfinity WiFi in several areas and it's saying my user name and password don't match. I can login into my account but not the WiFi?? I've tried FIVE different users names and passwords. They say they are ALL wrong! Need to work from home and only have xfinity WiFi to log into. Was working until 4am this morning!! Help!! Need this fixed asap