I just bought a item and I don't understand what to do with the info the seller gave and he told me to respond but how do I do it outside a of a purchase because the purchase has been completed

How do I message the seller I bought from outside a purchased from…?

Can you provide information on what you received, what you intended to buy, if the transaction was inside of Gameflip and not anywhere else. Submit a ticket if you can’t get a hold of him. If the purchase was INSIDE of Gameflip, you are protected by the buyers guarantee.