This leaderboard, specifically: http://www.speedrun.com/mmu

I have some test categories in the ILs section to try to get them to show up, but nothing is showing up. I also set ILs as the default view, and STILL nothing is happening. Help!

Have you attached any videos? If not, that may be why they're not showing up? Just my best guess.

I can't submit anything for the ILs, either.

Have you added levels as well as categories via the Edit game page? There are two tables and the leaderboards will only show up when there is one thing in both of them.

I have added both levels and full game categories.

You need Individual Levels categories as well. It's below Individual Levels.

Thank you! They're finally showing up! :D