If your mod isn't showing up in-game or parts of the mod then you need to read this post!
Make sure you have downloaded or updated the mod correctly. This is always the most common reason of why the mod didn't show up in your game. This is mostly a issue when you don't fully delete the old version of a mod before you add a new one. You do not need to replace files you need to DELETE old files. If you need help updating or downloading mods go here: https://www.kawaiistaciemods.com/forum/help-center
If the mod is a script mod another reason it could not show up in game is because you put the .ts4script file too deep in your folder. I like to put my .ts4script files directly in my mods folder and not into any other folders in my mods folder. If the name of the script shows up in your game in the pop up when you load the game then this isn't your issue.
Make sure the mod isn't conflicting with another mod. The easiest way to test this is to move all of your other mods out of your folder except the mod you are having issues with. You can keep MC Command Center in when you do this method. If the mod works fine without the other mods then you need to narrow down what is conflicting with the mods.
Another reason the mod could not be showing up in game is if you require a certain pack for it to work properly. You can check the download page for information of what the mod requires to run. You can also ask the creator for detailed information!
The last reason the mod isn't showing up in game is because the mod isn't working or is outdated. Before you report this issue to the creator make sure you have read and tried every step mentioned above.