If that doesn't work, you might try (in console):

sr clear *

I know some plugins use the * as a way to identify all players in commands.

RP clear all command

sr clear all

"You have removed all reward profiles"

I have tried "/sr clear all" and "/sr clear *" both in chat and in the console. The "all" argument does nothing and the "*" says no players found. I don't see an option in the config to remove player data folder on wipe either. Oh and I've tried deleting the player data folder and after reload it comes right back.