Maniaplanet Forum

It tells me to enter a validation key to pay 1 planet for a custom car. I forgot it. I might have deleted the email that contained the key. So I went onto my player page and got a new validation key via my Steam CD key. When I enter the new key into the game, it says it's incorrect.

Funny... it worked before, but now it doesn't.

I don't know how to fix it. What do I do?

The MasterServer seems down, maybe that's the reason why it doesn't work.

Are you logging into the correct (TM4) Player Page?:
https://v4.live.maniaplanet.com/