Thanks to some help from the FreeFlarum admins we have been able to track down the extension that may be causing the severe forum issues. We have disabled it, so these errors should stop happening. We can’t guarantee the errors will stop completely but we hope this will solve it for now.
More data is being recovered. If you were discussing anything before the rollback that was lost due to rollback, recreate those topics. Also, if you had an account that was deleted due to the rollback, you are welcome to recreate it. Any groups you had can be recovered.
If you have any further issues, post here.