add_filter( 'aioseo_access_control_excluded_roles', 'aioseo_filter_access_control_excluded_roles' );

function aioseo_filter_access_control_excluded_roles( $roles ) {

	if ( ( $key = array_search( 'customer', $roles ) ) !== false ) {

		unset( $roles[ $key ] );

	}

	return $roles;

}