Welcome to the community @Crypto117. 
BitDefender can indeed be problematic with WeMod, or specifically some trainers. BitDefender is an over-aggressive antivirus that likes to block safe things from time to time. In the not-to-distant past, I’ve even heard of it blocking critical official Windows files that Windows 10 relies on to work properly. This thread should hopefully help: How to white-list WeMod in BitDefender!