Gog doesn't accept my new card (It's not the first time I have a problem, even with my old card I had multiple issues), so guess which store I won't be using again.
I'm full of this, I never had any problems in other stores like Steam, Gamersgate, Playstation store, etc.
There's something seriously wrong with this service, unfortunately.

Have you contacted support about it? Just asking, as I was happy with them helping me out (with something entirely different though) recently. Also, did you consider PayPal?

Yeah I'll give it to GOG, their support is way better than Steam's. I've contacted them a few times and was very pleased with the feedback I got.

Mmm, it seems this payment problem only happens if you select to buy games in BRL.
Just bought Owlboy in USD, zero issues.
This is pretty weird, maybe there's something wrong with BoaCompra?
The good news is that I can still purchase stuff, but I'd prefer paying in Real.
I'll send a message to support, maybe they'll be able to help.

Why? Isn't it a lot easier to pay in fake money instead?

Good to hear you could make it work :)

I see some people mentioning here and there that they're having issues with mostly slow response times, but me, I found GOG support pretty quick and helpful in the past.

lol, not as slow as Steam's x). You'll be lucky to get a response within a week from a bot with them.