I need assistance with an xbox stay code.

I bought this code from G2A it was already redeemed by another person and the G2A vendor now needs a screenshot of my entire display truthfully I feel it's a rip-off, however there's this code on the backside left nook and I don't know what it means c77ArczSZbpjzeb+yMUK/+.97 . Can somebody inform me? Thankyou.

https://preview.redd.it/429x4eiwk1xa1.png?width=465&format=png&auto=webp&s=57b4b4798c6fafa630c86ae067b1b536d1910e72