Error Messagge

I have this error messagge on the top of the page:

"All accounts have been deauthorized for your security, as a result your previous password no longer works. Click here to request a new password. If you don't remember your email create a support request here. For your own safety you should change your passwords."

The problem is that i actually know all my login information (email includes), but i still get this messagge also if i change the password by the link provided by the messagge.

Could you help me? Or just remove the message? Thanks.