Does AT&T know their website is buggy and does not appear to be taking payments correctly? Have you guys been hacked?

I use Firefox browser:

1. I log in.  I select I want to pay my bill.  I get a white blank screen.

2. I log in. I select I want to manage my text-2-pay.  I get a white blank screen.

I change to Google Chrome browser:

1. I log in.  I select I want to view billing.  I select I want to manage my text-2-pay. I get a white blank screen.

2. I use the back arrow to return to earlier screen.  I select I want to pay my bill.  Site takes my information, then shows I have a credit card on file the same last four numbers. I select edit to put in my security code.  I select to pay my bill.  No confirmation number shows up, the information disappears and I get a website similar to the earlier one but shortened.  I use the back button.  No change to my payment history.