Cannot install DecraftingTable mod

I've been trying to install the DecraftingTable mod with no success, while other mods for some reason are properly installed with no problems.

My guess is that the jar file has a "+" character that prevents Aternos from installing the mod.

I'm using Magma 1.12.2.

For some reason it won't appear on my files, however when installing more than one version the logs warn about conflicting versions; when solving said conflicts nothing else happens. Tried looking for the mod item but it doesn't appear in-game.

Yep, you're right. It's a plugin, just found out xD

Guess that's it, thanks!