If you agreed to participate in such a transaction, we cannot help you.
Remember: Outside trading puts you at risk of scams and other
illegal activity. This is why trying to sell or purchase in-game items outside
of Rocket League is against our EULA
and TOS. Blueprints, Credits, and other in-game items may only be traded in-game.
This is to ensure a safer and healthier ecosystem. Attempting to sell in-game
items personally or through third-party websites is not allowed.