Mods on mac (M&B Warband)

I can't download any mods on my native game using the steam workshop. I want to install the Diplomacy mod. I've subscribed to the mod, but it hasn't been installed on my game. What should i do?

Submitted March 24, 2017 at 08:59AM by i_love_vaporwave http://ift.tt/2nevweJ