Invalidating security token and thus forcing every client to re-login is a very basic security routine for any web-app. An ability to do so through the UI will allow a user to resolve issues like “a stranger broke into my account” and “Deezer acts like someone else connected to my account but I know for sure it’s not true” without contacting support (or trying magic practices like “reset the password and stop using Google login” that reportingly do not work anyway).
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.