They've updated the system to show that their system is apparently bogged down with key redemptions, stating: Just hoping I'll see them added to my account by tomorrow, added 3 new games today that still aren't showing (Hero's Hour, Planet of Lana & The Coma: Recut )... I'll keep watching on my order history until I see they are added.

Nothing really to be fixed. It seems to be workig with delay which is mentioned when you redeem a game as a message. I just got my game that I redeemed 4-5 hours ago, got the e-mail too There is probably no other way for them to do it without the servers exploding. Personally I am okay with that

Just redeemed 3 keys and all good.. if anybody is facing the issue just spam click the f out of it nd it eventually gets added in 4th or 5th attempt. Always worked for me.

If the only customers who redeemed codes were those who obtained them personally, then sure. But this design sucks for people who try to redeem those "ninja" codes from public giveaways. The codes can't be reliably checked to see if they're still valid, so anyone who redeems the code thinks they are a winner... and no message is delivered to indicate the tried code failed when it finally gets processed. Ergo, instead of getting a fail and looking further afield until you find a valid key elsewhere you're either going to be sitting there waiting for something to happen/not happen, OR you're going to hit every single code you see over the next few hours until finally the code shows up in your account.

It has its drawbacks. Elegance comes from code which works for all users.

For those having trouble seeing their redeemed game in their library web page, try the following link.

https://www.gog.com/user/refresh

That usually fixes things.

Are you sure? From my tests yesterday and today, the success or failure message arrives immediately --- it's just that in the case of success, the game is available for download with a delay of one or more hours.

If the code is still in the queue and not already processed it'll come up as available and successful. If it's been processed, yes, it will come up as used.

So if it's a freshly-dropped code and everyone scrambles to claim it first, they'll ALL think they won.

I just re-checked myself. The first code I tried from a twitter drop clearly wasn't the one I won, because a personal gift I got later (for the same game) and redeemed, a code which was not given to anyone else, is now used. Hence the second code I used succeeded, the first one did not... unless both got redeemed (by me), which I severely doubt.

In conclusion this means the queue system doesn't mark a code redeemed once it's placed in there, it only gets marked redeemed when it gets finally and properly processed. This is also the reason why you can seemingly redeem it multiple times yourself: the queue system is holding back processing the redemption claim. This is basically useless for a time-sensitive giveaway drop.

Good to know. Thanks.

This absolutely helped, I had some of those games claimed a good two weeks ago, and they did not appear in my library, this fixed things.

Thanks a lot!

The "user refresh" didn't work for me...

I entered 15 gift codes and only 2 games (somewhere in the middle) were actually added to my library. I entered the first codes about 1 hour 30 min ago and it took me less than 15 min to finish them all.

...this is pretty annoying...

UPDATE: Suddenly, every now and then, I get all the games! At this point only 2 games are still missing. So don't get nervous (like me) if you don't get the games in the same order as you entered the codes! It seems like the time to process a code is different for every game!

For all those having trouble, Amazon Prime codes are now handled differently than many months ago.
You can reference this thread: Prime Gaming free games not appearing in GOG library

All Amazon key requests are placed in a server queue. It takes time for the server to catch up, thus the message warning it may take time and the delay in seeing it in your library.

Thursdays and Fridays are the worst days to try to redeem. Right after Amazon posts the new free games for the week generates the most redeem key requests and has longest queues. The best days to redeem gift keys are Mondays and Tuesdays, after the usual rush to redeem new keys is over and the server has caught up more. You need to be patient, especially if you redeem a lot of keys right after the new ones are dropped. Those game keys most redeemed and in demand usually take the longest.

Also, the more free game keys Amazon drops for that particular week, the more games redeemed and the longer wait time in the queue lineup. The times for delays on Fridays have been previously reported to be from 12 to 20 hours before the request goes through.

Nice detailed information! Thank you!

By the way, suddenly, every now and then, I get all the games! At this point only 2 games are still missing. So don't get nervous (like me) if you don't get the games in the same order as you entered the codes! It seems like the time to process a code is different for every game!

I redeemed a game on June 5, at it said it got redeemed, but oddly enough it doesn't appear in my game Library yet.

Was it your own code, or did you get it from somewhere else (like this forum?)

If it was your own, I’d either try the code again, or contact support. And if you got it off the forum or somewhere, Prime codes have an issue where, due to the delay in processing, multiple users can actually redeem the game and it will say it was redeemed, but only the first person to use the code will actually get the game.