Yes, I only have 1 account, I havnt made any changes in my android device opera, but after I made fresh install opera in windows10 and entered the sync account password, everything was gone in android phone in desktop section speeddial. It seems like opera thinks that my freshly installed opera has the newest speeddial and bookmarks and it overwrote the synced data.

I upgraded windows and had to reinstall opera. I had many bookmarks and speeddial shortcuts, I lost them all, when I logged in with my opera account. Now my bookmarks and speeddial is replaced in all decvices with those few default bookamarks, which you have after fresh install. Is there a way to recover it?