You know the GOG code that came with GeForce GTX 970, for The Witcher 3.
If you used that code on the wrong account, is there a possibility to fix this?

1) Don't download it
2) Sent a ticket to support explaining the situation

What he said. As long as you haven't already downloaded it, GOG shouldn't have much of a problem with moving it, they're pretty good abut this kind of thing.

Thanks for the quick replies, I just sent them a ticket and will see if they can help me out.

I have not downloaded the game as it's not out yet for pre-download or anything. :)

When we ask whether you have downloaded the game we mean downloaded the game or any of its bonuses. But if you haven't done that, there probably won't be any problem.
Also, in case you are new, welcome to GOG!

I have not downloaded anything so.. but I'm not sure I found the correct section for the ticket. I sent it 18 hours ago, do anyone know how long it might take before you recieve some help? :)

It could take a couple of days,just be patient.It will be answered.

Wrong account? Why did you create more than one?