We had a slight glitch and the forum deleted about 80 threads at random - we are restoring them currently but you may have had an alert saying your thread was deleted - please ignore this and do not be concerned. Thanks, Freya :)
You can still do it. It just needs to be approved by a member of staff before it is displayed publicly - just like the rest of the forum. Sometimes it may take a while if no staff are online to approve, or unapprove, posts. That's part of being on limited access.