I can't access the EA FC mobile Webstore

I can't access my EA web store fc mobile. I used my login email address and password, and when I did that, it did not connect. Instead, it redirects me to log in again. This issue has been happening for a while. I have spent money on this game, and I am looking forward to hearing from you as soon as possible to fix any bugs or errors from your side. If I can't access my webapp, then I don't think I can log back into my account on fc mobile using my email address and password.