You know this all thing with GOG keys is complete bullshit. I got one GOG key and one Steam key - the reason for the later is because larianvault didn't have an option of GOG key DUO at that time, and when I tried to see the alternative selection I accidentally pushed the Deliver button. No, i get a reply from larian support:
Quote
Since the key has already been claimed, it can no longer be revoked.
As a last option, you could try to find someone who hasn't claimed a key yet and wants a Steam key. He/she could then pick the GOG option and you could trade keys.
Now, I'm stuck with GOG and Steam keys, and I and my friend can't play together because GOG still has the 1.0.37 version. Why the hell did you even list GOG as an option if it doesn't receive the same amount of support as Steam, you could've said that it's a Steam only game and release it on GOG in august. I'm not even sure I even want the GOG version now, because these few days showed that it is going to be inferior to Steam one,