Hi there, 7rami.

Something weird happened when I tried to activate the key you gave. When I activated, Steam said I got a game called Rocketcers : https://store.steampowered.com/app/857800/Rocketcers/
So initially I thought it was a wrong key but then I checked and it seems I also got this game "Voxel Warfare online" (this GA game) together, like 2 games with one key, so I think everything is okay. Just wrote this down to let you know.

And thank you very much!