Trouble simply purchasing plan. Any advice or help?

We are moving back into an old house we used to live in and use Xfinity at. However, when attempting to use my (husband's) old login information, it did not let us link or change our plan. I had placed an order, but never received an email regarding its specifics. To make things more complicated, after attempting to purchase a new plan, I was given the option to "link" my accounts, but nothing happened. I spoke to the 24/7 chat on my app, and they had no record whatsoever of me even attempting to purchase a new plan.

Fast forward to later tonight, I attempted to create an account with my wife's information, with her permission. Well, I was able to select a plan just like before, and got all the way through to verifying her phone and email, but as soon as I verified both, there was an "error" message, stating to "try again later." My wife nor I received a confirmation email on either of the orders (both for the same address, mind you).

Finally, to make things even more frustrating, I cannot sign into my wife's account whatsoever. I've tried going directly through my.xfinity.com, but even that doesn't work. It's not even giving us the option to sign out. As soon as we select "sign in", it takes us to the home page as if we've signed in, then immediately signs us out. I've tried the mobile app, but it states that the user is "not authorized."

Now, we procrastinated big time, since we are moving in a couple of days and would get the internet set up in a week, but we're fine with that. However, we are getting a little too annoyed with the poor experience and are strongly considering taking our business elsewhere, but we don't know if our orders to the same address are just floating around out there.

Overall a complete nuisance of an experience.