Need help/advice!

Long story short I just received my code for selling on amazon. This is my second request, the first wasn’t delivered to me.

Anyway, I got the code and it’s not accepting it when I try to sign up. It’s literally just numbers so there’s no room for error.

How should I proceed? Is there a way to call them and figure this out?

I’ve already waited two weeks because the first one was lost in transit and amazon said this is my last chance since they only allow 2 sets of codes to be sent.

Any help would be nice