Having an unpatched game or a non-official version of the game will cause some CC to not show up in game. This can be the case when something is cloned that was added by one of the game patches. Some creations will need the game to be fully updated to show up correctly.Some CAS creations will only show up if you remove the default male/female setting in the filter.When using the game filters for only showing 'custom content', creations should be easier to find. Some creations can be made as a recolor variation of an in game item, instead of showing up a seperate item.The description of the downloaded creation on TSR should in that case give info about what is needed.
To make it show up again, you'll need to enable it again manually in the game settings, and restart the game after that. If your downloaded and installed custom content for The Sims 4 does not show up in game (or not showing up as expected), there can be various reasons for that: No CC shows up in game Custom content is not showing up in the game
