There's no command to remove notes, either individually or as an aggregate. You can edit them out of the database, but BMclear doesn't touch them and it'd be really nice if we could just delete them individually.

/bmclear <player> notes or use /bminfo <player> -n to find the ids and use /bmdelete <id>

/bm clear notes doesn't do anything. The plugin says 'not a valid command, try [other category]'.

I'll look at the other stuff though.

The command @confuser provided works as expected. Try bm and clear without space and with player name provided.