by Lemon Cheesecake » Sat Feb 17, 2018 3:12 pm
Boris: mark and then delete the existing messages.
Once you do it will free up space but in order for them to populate you have to click on the line that says something about: to release new messages on hold, click here". The words only show up if you have PM on hold.
It will be a small paragraph above your message board that shows you have too many.
I had so many messages and ended up clearing room then going out and coming back to release the hold. (like refreshing the page but I actually clicked out and came back).