Invalid credentials

Haven’t even fully signed up for service yet, was in the process of making an account and got distracted. When I come back to the Xfinity webpage and try to continue with my order it just says “invalid credentials” how can my credentials be invalid when A. I never even finished making my account and B. Never fully placed an order. Now I got a verify your email- email from Xfinity and that doesn’t work either. Literally none of the options or webpages I click on work, it’s either “try again later” or “try refreshing the page” you would think an internet company like Xfinity would make it easy for People t make an account and set up internet but I don’t even have service yet and I’m having many many troubles. Extremely frustrating