Move the downloaded zip file into a previously excluded folder and fully extract it in there. If you use just 1 folder for all our trainers, great. This folder needs to be excluded.
For the the GTA V trainer (and all our current trainer marked as Trainer Manager Compatible) you also need an exclusion for the
Work folder here -> C:\Users\YourWindowsUserName\Cheathappens\
You then need to completely disable the
Advanced Threat Defense module prior to start and while you run our trainers.
Please watch more here about BD 2018 ->
LinkSidenote: Uninstalling doesn't mean that you loose your license key as it is bound to your Bitdefender account.