Configuring to wipe Kits data?

Hi, so im a bit noob to this plugin and im having trouble trying to figure out how to set it so when I wipe the server, this plugin wipes the player data for the kits for each player so I dont have to manually type /kit resetdata ingame ... Now i see the example in the config but I dont get the difference between Soft and Hard wipe aswell ? could someone help me set this up please