Not subscribed to Game Pass after code redemption

I recently redeemed a 3 month Game Pass code I got free as part of the Microsoft Rewards Quest. It's been two days since the redemption, but my account is not showing as subscribed. When I re-enter the code, it states the code has already been redeemed.

I've already talked to a chat representative and I've created a support ticket. Both methods got me nowhere. How can we resolve this issue?

:)