Many of my games are missing from my Library on Steam Mobile.

I want to remotely install a game, but when I search for it, it does not appear. It does not even appear in the alphabetical list when I am scrolling through my library. It appears in my purchase history, and appears on my desktop client, only not on Mobile. The same is true for many other games. I have not noticed this issue until recently.

In this specific case, the game is Assassin's Creed Mirage, and when searching for it, I found I do not have ANY of my Assassin's Creed games in the list on Mobile (of which I have several), even the ones which are already installed.

Please fix.