Lock your personal computer files until you pay a fee.
If your goal is to protect yourself from others who are crashing your game, you don't need a client. VRChat has built-in features that are much safer: vrchat crasher client link
Crasher clients harm creators and disrupt the social experience. Creators invest time building worlds and avatars only to have them exploited by crashers who bypass anti-cheat systems. The community has repeatedly called for better moderation tools to combat this issue. Lock your personal computer files until you pay a fee