Received an error code, I have launched a dispute but 2 weeks has not been resolved

Gameflip - Help & Bugs
1

The buyer gave me the wrong code, and I’ve launched the controversy, but for a long time.
The order id is：9f7be15b-9975-4b72-bf82-15b251138d78
My code is：6FF8V2

2

Hello! As I checked, this issue was solved already.

Thank you.