I’ve had the same error I can’t open previous backups from all the work I did yesterday? I’m assuming this a glitch? I closed the project last night, however, I had an older version open in another tab, which I was unaware of and web flow continued back up ultimately overwriting previous backups,it will only open read-read only, on the project I closed last night.
Judging by the lack of response there isn’t a quick solution.
However, I can open a read-only version of the project. I then copied and pasted it section by section into the latest backup and deleted the rest. It doesn’t get all my backups back. but it does get one version of my work back.