@cypernisse Can you please visit http://www.sync.opera.com or http://www.auth.opera.com using opera for android and check the status if you are logged in. Also please confirm that when you go to Main menu -> settings -> sign in, you are not logged in?
Here is my suggestion:
Visit above mentioned site (http://www.sync.opera.com or http://www.auth.opera.com) Clear site data by clicking on top left icon in address bar -> site setting -> clear data Go to main menu -> settings -> sign in Sign in to sync