I have 2 worlds, and I play on 2 servers, the 2 servers and one of my worlds the mod works fine, but the other map that I have.... I can press F7 as many times as I want and the mod just doesn't do anything

Was this issue fixed?

Yes, I was just dumb, your mod wasn't showing because I was on the Void biome and mobs don't even spawn on that biome.