Sin6ularity: Thanks. Sorry to hear that, I read on forum about it, some people have problems using their credit cards. I don`t know the reason.
GoG support couldn`t help either?
The last time I encountered this issue, it took more than a week of back and forth with support and they couldn't offer a fix. However, things started working magically about a week after that. Nobody informed nor contacted me about any fixes, I just had to randomly try over and over again.
Too frustrating and really not worth my time. If checkout is so broken that I have to spend half a month trying, I'm not buying anything.
Maybe some banks have problem with gog purchases and that topic probably deserve more attention on forum.
Maybe, it's the same payment provider though. GOG's systems are never directly interacting with any bank.
I suspect the integration (or adyen itself) is just crap.