@leocg why are you impolite?
If not changed by user, bookmarks are automatically kept on a server, as well as the mobile.

How about answering complex topics instead of being harsh on easy targets?

@karamella101 apparently you are denied deleting this account on that level of your mobile.
If you want to delete opera, find and change administrator settings on your phone.
Search on startpage can help with instructions

@yanta please read my question.
your suggestion doesn't solve the issue and give access to my account.
I still receive both contradicting notifications, where Opera mobile tells I'm not logged in while sending an email notice that I'm logged in...

I'm unable to access Opera sync on my mobile. Despite changing password I get a message about server failure. Still I receive a e-mail notification about login. Access on webpage works fine..

@leocg I guess I have the same problem. Suddenly Opera asks for a password despite running for years. Despite using the correct password, suitable for my Opera account, I'm told it's wrong for logging in.. Are there more than one" level" hidden behind a password?

@devashisha totally agree with you. Synchronising should be as easy as possible. Anything else by Opera runs smoothly.

Years ago my PC was connected to Opera Link effectively storing thousands of bookmarks.
Is these data still available in some magical corner of the Opera cloud, or simply lost by ongoing changes in Opera functionality?