I'll advise to leave GC, codes etc and card other physical atuffs. GC frustrate people's careers and they quit even before their career starts lol. GC is bad news. Payment processors GC stores use charge them 6%-9% of each transaction cos they fall under high risk businesses.
And now the fraud liability is transferred to the payment processor, that is if there's a case of chargeback, it's the payment company that pays the chargeback and not the GC store cos they agreed to 9% of every sale and liability transferred.
So with that being said, these high risk payment companies employ some insane ass methods to verify every single transaction cos it's their loss if there's chargeback. So even legit cardholders have trouble buying from GC stores, not to talk of us fraudsters LOL.
Guys leave GC for some other stuffs unless you have thousands of cc and no use for them. You can try

Many USA Mastercard working as well on Apple Pay method too.