I always get errors at first in the GameVault. At first it happened with No rest, which showed "out of stock(ous)" after I refreshed. But the errors are not only because a game is "ous" since I kept getting the same errors after I tried to claim Die by the Blade, which I
was able to successfully claim after trying 3-4 times. And it's not the first time this happened, it happens every time. Sometimes getting a game after several tries and others getting the "ous" on all the games I was interested in.