If I have understood correctly there is no way to redeem the invite code if you are already playing the game. That is why I have decided to make a post for the generous people who want to give away their codes for new players. If this post gets a lot of attention I will be giving away my own code as well! So if you have a spare code share it! lets make the world of warships community larger by giving a bonus for the new players!
EDIT: Also if this does get a lot of attention I might make a google sheets file with the gifted codes inside.
2ND EDIT: I have decided to already share my own code since not sharing it might slow the possible spreading of this post. Also to stop comments like (no offense) Arakus' which I have realized there will be lots of. But thankyou for sharing your opinion Arakus! Code: T59MD-NBH73-W374E-UWFUT