First things first: The character creation works fine. However, after I finish it and start the game, the player skin will still be the default Alex/Steve one or any normal skin they're using.

MCA Version: 7.3.23, Minecraft version: 1.16.5, Forge.

%appdata%/.min
latest.log
ecraft/logs/latest.log`.

When epicfight is installed, this feature will be disabled because it is not compatible anyways. You can enforce it by deleteing the epicfight lines in the config.