Well, especially for you, CheckMods exists.Try the new version, it's still in a test state, but as you are already kinda lost, you got nothing to loose... Link to CheckMods 1.7
Just let it point at a defective installation of IL2, you can even try an old copy of UP3 ;-)
(Others better not use it yet!)
I had better check how it authorises users FT.
Can't remember how we did it, I recall there was a cron job that updated the IPs that were allowed to access the directory.
As I have not implemented that since we should be OK for now