Hi! I can't redeem a reward for the registration and linking my steam acc (Endless Space: Collection) because I already bought it. May I ask respective admins for a key for my friend or something like that instead? Thanks ^__^

Hey, welcome!

You can only claim Endless Space Collection if you have a steam-linked G2G account. It is an automatic thing so there are no key generated, instead the game is simply added to your steam library.

Cheers!