https://support.gog.com/hc/en-us/articl ... roduct=gog
Da heißt es aber auch:
Das wird jetzt nicht anders sein. Mal ein Refund dürfte ok sein, regelmäßig dürfte den GOG Account aufs Spiel setzen.14. BUT WHAT IF A WHOLE LOT OF MY GAMES DON'T WORK?
We know that, since we're the Internet's leading DRM-free gaming platform, our Money Back Guarantee offer here is open to a certain amount of abuse. If you're being a bad person who's abusing our trust of you and asking for a whole lot of your games to be refunded and we can't resolve your problems, we'll have to stop offering you refunds.
So don't be that guy. No one likes that guy. How many games can you ask for money back? We're humans here, so there's no hard numbers. If it seems like you're exploiting us, we'll let you know and tell you that this will be your final refund offer from us.