You can join my Discord server and read my terms of services, which include a warranty policy too.
With me you are safe as I won't double sell your codes and all the codes get checked before being sold.
Please add me on Discord if you have more questions.
Yo
As far as i know the codes can cracked by others which means even if you check before sending it doesn’t mean they are going to work later unless you are using some private combos i guess