Can't find a purchased app in appstore - even though it's in my itunes purchase history

Hi all :)

I bought a game (the longest journey remastered) a few years a ago (2016) and for some reason, when I try to find it in the 'purchased' tab in the appstore it's not there...

I have the receipt, and also, I can see it in the itunes purchase history.

I read that the game doesn't support ios 11 but I have ios 10.

Really frustrated, what can I do?

Thanks!