Low enemy =(

Laguna Hello !, my name is and I am from Spain. My level of English is basic forgive. I have installed a server with Sponge Forge, everything is going perfect. My only hesitation is that I’ve noticed that the number of enemies is very low u.u I have the server in difficulty 3 and playing in Vanilla or Spigot appear many more.

Practically I have not touched anything in the configuration how could do to appear more mobs ?. In the “/ config / sponge / worlds” folder I have seen that there are configuration files of each world could it be that you have to change something there ?.

I’ve noticed that the enemies if I do a local test server appear correctly. Apparently it is something of the map that had moved from the old server. How could we solve that?