You're waiting for assistance with inaccurate post statistics on a forum with 1 post?
First of all, the assistance has been there, even though you hardly gave any information about your forum (see https://www.phpbb.com/support/srt/
which would at least give the support team some basic information.
Next, as mentioned: a forum with 1 post, in other words it's probably just been set up. One option would be to give an admin account to a SupportTteam member so that he could see for himself.
On the other hand, what's stopping you from reinstalling? That should take max 30 minutes (compare that to the time elapsed since opening this topic).
Perhaps was just an random hickup (unknown cause), and if not at least there will be a confirmation that something is interfering in your setup.