Suddenly I started to get "Login attempt failed" warnings from my cpanel account .

I've managed to change my account's password, but still I have two "open actions" related to my password change with status "processing, please wait", and I can't get access to cpanel. (It's already has been a two days since the problem occured).

I can login to my user's account with my new password.

What is the cause of this problem ?

And what pair of login/password should I use to login correctly?