Scammers. I bought a game from GoodKeyShop on Difmark and got a password and username for an account. It worked but if somebody else would also log into the account I would get kicked out while playing. After 2 years I got kicked automatically out of the account because somebody changed the password. I tried to get in contact with the seller and with difmark. Difmark only sended a message to the seller and closed my complaint after that. The seller told me it was my own fault because I logged out. What a complete shitshow. Don't trust these scammers.