Hi @alex-abrahamson, this was an issue on old versions of Opera. It was already solved and the fix was available with an update. I can see you're still using old version. Please update and the problem will be solved.
The bookmarks are already in there. That Bookmarks folder is the one on the bookmarks toolbar. There is no access to the parent directory of the bookmarks toolbar any more. That is the problem. The Bookmarks on the left at the top of the list is just a line of text, not the parent directory. The parent directory is simply not available to add things. Once you take everything out of there except the hard-wired directories, there is no way to get back.
I was wondering if putting most of the bookmarks back into the parent directory would make it possible to use the "Add to Bookmarks" menu item again. It does not work with Opera 56 or subsequent versions. The doorhanger that drops down from the heart symbol is totally blank.
I had the same problem but it was fixed after doing this:
Windows defender > device performance and status > apps and software and let that run.
It told me the location of something from my browser had been changed and if i wanted to change it back to standart wich i did.
Worked for me hope it does for you
you can use V7 History for that
either search for facebook in search field...
...or even better, simply click on facebook icon in sidebar list
this will act as a search for facebook in all titles and url's in history (much faster without typing in search field)
when you get results, there will probably be some items that are not from facebook domain
(like google results in red because there is a term facebook in title)
if you wish to filter only results from facebook domain, click on search term on top (in green)
this will give strictly results from favicon domain that you clicked
then click three dots on the top left corner and choose delete all
ps. this can be very slow process if there is a lot of url's (more than 100)...pls wait until extension is finished deleting