That author is already banned from mxc community by @Designatix you should aware making deals with such people i hope paypal refunds they money that you lost..
if you encrypt it with smartcrypt it's hard from random people to open it..
only people who have decrypter will able to open but we are on 2020 who will sit decrypt some weapons/armors? nobody.. anyway i offered my soft to encrypt ur files u can buy your own and encrypt any files.
Topic moved to proper section , from whom you bought these server files he has mxc account?
it's simply a backdoor to grant acces and destroy your server most of kids do this thing and they ask always for money..