Steam rewards not working

This is also occurring for myself, the buttons seem to have a "wave" or "pulse" effect, but the rewards are not redeemed.  I have checked and synced with Steam multiple times, but this does not seem to solve the issue.  I hadn't played either Endless Space 2 or Endless Legend in some time, but wanted to come back since I saw the Endless Legend 2 trailer.  I picked up a couple of expansions I didn't already have, and saw the G2G rewards, so naturally I wanted to add them to the game as well.  If for some reason these rewards are no longer available, please state as such on the website and remove the links in game.

I am having the same problem, is there a fix?

Same problem here. Someone already fixed it?

Same problem here. Went for the community chalenge addon to get the swarm missiles and railguns but it won't transfer to my steam account for some reason. (I already have linked my steam account with this one)

​Hi to anyone reading this: I found the solution on the forums:

Make sure your account is already linked and you are logged into Steam from the browser.

Click on your profile name on the amplitude studios webpage (for example on this page that you are reading this, on the top right corner) > click "Rewards" tab on your profile > click "Badges" tab on the screen > lot of badges will be shown to you: click the "Profiler" badge on the screen > go down the page a bit and under "Quests" section click "Connect your account to Steam" > on the right side you will see the reward Add-Ons, click "Redeem" for all of them.

Close and re-open Steam and you'll have the DLCs.

Have a nice day.