My guess is that its just server issues on their end. Have similar issues and got friends who are seeing the same things.

Give it some time.

It's not just you. It happened to me too, and a lot of others. Can't do anything about it now, except wait till it resolves itself.

Probably just a server glitch. It happens once in a while. Should be resolved within a few hours.

Thanks to your answers, I am not alone ;) and when I want to see achievements stats for a particular game : the message "There was a failure loading user game stats" ! A server locate in Europe ?

same here
nothing on my profile page
0 achievements, 0 completed, 0 % average
nothing

Oh thank lord I thought I was the only one or something.

I'm trying to see if they are erased on my profile too, but it seems like that I can't find the achievements thing for the profile

I went to the Reddit and they are apparently having server problems, some people have problems searching things in the Store, others have their Screenshots Bugged, or like in my case the Artworks I've uploaded disapeared nor does it let me upload them, steam achivements completely missing, etc. I suppose we'll have to wait.

+1793 achievements 78 % and 65 games finished disappear my last achievement was waiting for a long time : cliker heroes "revive 100 mercenaries" !

@Riedy : happy to have help you =>

Lol same for me. I was so confused good to know it's just a temporary problem.

same problem

Some games are affected too : Pixel Puzzle Ultimate restart the tutorial and wants to parameter after 59 hours and 20 puzzles finished !

also achievements in my library are gone

Thank you for explanation, guys