I contacted support via email. They replied in a short amount of time. I replied with a call back number and tech remote into my server (but stated could have been a client). Then ran a script to remove link in database as prior thread stated. Now no more Ads.
Tech stated the link may return if upgrade to new version of AC or if move database to a new server. If that happens, then just contact support and have script run again.
So, as long as nothing is updated, then should be permanent.
