G2Aのサポート、シールドやめてから顧客対応しなくなったっぽいね
販売者と購入者の間で解決しろって方針らしい

Hey there,

Thank you for contacting G2A Support, although I'm sorry to see that you've had such an experience.

As for the case concerning the problem with the product you bought, allow me please to start with the fact that recently G2A made some crucial changes to Resolution Centre and how it works.
Basically, it was replaced with a Conversation Module where Buyers and Sellers can interact with each other to amend the problem.

Now, G2A does not interfere between Buyers and Sellers when it comes to complaints.
It is the sole responsibility of the Seller to resolve their customer's issues. If that happens, by any chance,
that you don’t receive any response from the Seller, make sure to share your experience using Rating System which is available in Bought Items section on your account.

At the moment, G2A is working on a special program to assure all the purchases are guaranteed.
It's not live yet, however, don't worry - once it is, you'll be able to use it.
Please be patient and meanwhile try to solve the problem with the seller.

Yours faithfully,
G2A Team.