Perfect. That did the trick. Thanx a lot

Under synchronization there's only one button to sign into the synchronization,
wich when I log in starts immediately the complete syncing.

At the bottom of the screen advanced configuration is activated,
but no further possibilities to an advanced config of the sync options.

Or is this in the linux version different to the windows version ?

Is it possible to sync only bookmarks without syncing passphrases ?
I ask because of the attack on Opera Sync, I'll prefer now to sync only my bookmarks,
while the passwords should only be kept on each device.