are you totally unable to edit your forum, or are you just unable to add videos?
completely unable to edit. The forums are behind a membership wall but as the administrator and site owner I can’t figure out why I don’t have access. I reviewed my user roles to confirm.
ok, I would strongly suspect you membership wall, presumably a plugin – not a lot we can do if it is.
This generic help should let you define where the issue is
It could be a theme or plugin issue issue, so you’ll need to test to find out which
As a test switch to a default theme such as twentyfifteen, and see if this fixes.
Deactivate all but bbpress and see if this fixes. if it does, re-enable one at a time to see which is causing the error.
Then come back
Ok. Many thanks. I will need to get someone to help me with that and will provide your suggestion for them to follow. Thanks again for replying!