dbkall the people ive talked to so far have had an issue where after you put the key in, the game just doesn't show up in your library. Not sure why that's happening yet, but if it happened to you youre not alone
If you're worried about your code not displaying the game
Epic Launcher->click name->Manage Account(redirected to browser page)->Transactions
then select Code Redemption History and it should be there as "HoneycreeperGeneralAudience"