Someone needs to be brave a take the first step. I know you can do it!
And please leave a feedback afterwards.
Stellaris, for influence to work, you may have to play the game for a bit before the influence location becomes valid with the trainer. You can always use console commands as well
I downloaded and extracted our latest trainer and everything worked like intended.
If you are sure about your AV (make it double sure by excluding our website in the software) maybe try 7zip or WinRAR to extract the archive file.