If you're unable to locate your account, I suggest performing troubleshooting steps to better isolate the issue. First, access your account via an incognito or a private browser.
Use these shortcut keys:
Ctrl+ Shift + N (Google Chrome)
Ctrl + Shift + P (Mozilla Firefox)
Ctrl + Shift + P (Internet Explorer)
Command + Shift + N (Safari)
If you can logged in, follow the steps provided by my colleague above on how to change the billing payment. If the private browser works, it means you'll need to delete temporary internet files in your regular browser. Deleting your cache and history can clear up some space on your computer or mobile device. Using another compatible browser is a good alternative too.
However, if the issue persists, I recommend contacting our Customer Care Team. They have the tools to locate your account and help you with the process. They are available Monday to Friday from 6 AM to 6 PM while 6 AM to 6 PM PST every Saturday.