I only know a little English, so don't blame grammar problems.
Anyway ,when I play with friends ,They can only use jump attack,but cannot use common attacks. I don't know what the problem is. Maybe is Epicfight bugs? But I don't have any problems, Singleplayer is no problems too.
By the way, I am the host LAN.
I hope you can provide a solution,Thanks!

Game version is 1.18.2
Epicfight vesion is 18.5.19
Weapons of Miracles version is 18.1.7.36.3