My laptop needed Mac OS Recovery to remove all partitions and install the latest OS, at that point in August Big Sur 11.5. I had joined Opera Sync in April 2021, but now can not find how to restore my old tabs and history. Restoring bookmarks would be good too. I have just signed in to my Opera account but am only offered synchronising with what is currently there, which is just the start page. How do I get back to April?