Go to your database in phpMyAdmin, in table wp_usermeta you will see this row:
user_id meta_key meta_value
1 bb_capabilities a:1:{s:6:"member";b:1;}
Change “meta_value” to: a:1:{s:9:"keymaster";b:1;}, So it will look like:
user_id meta_key meta_value
1 bb_capabilities a:1:{s:9:"keymaster";b:1;}
