Bookmarks will not transfer or sync.
I've exported my bookmarks as an HTML file on my old computer (Win 11 Firefox ver 149.0.2) using a USB drive and tried to upload the file to my new computer (Win 11 Firefox Ver 149.0.2.). Only a few dozen of hundreds of bookmarks transferred. Repeated tries simply add the same bookmarks to the menu.
I've tried sync. Both computers are signed in and are correctly listed in the connected services box. Syncing is ON and when I select the Sync Now button on either computer screen, the Sync Now switches very briefly to Syncing and then back to Sync Now. Sync has transferred no data from my old computer to my new computer.
Any ideas are welcomed. Thanks, Jagwriter