Hello,

This code below is preventing the code you sent from working

 /**
 * Buddydev force follow 6 members function.
 */
function buddydev_check_or_redirect() {
	// Force profile photo active?
	$fp_active = class_exists( 'BD_Force_User_Avatar_Helper' );

	// skip if logged and on non bp page.
	if ( is_user_logged_in() && ! is_buddypress() ) {
		if ( $fp_active ) {
			remove_action( 'bp_template_redirect', array(
				BD_Force_User_Avatar_Helper::get_instance(),
				'check_or_redirect',
			), 1 );
		}

		return;
	}

	if ( ! function_exists( 'bp_follow_get_the_following_count' ) || ! is_user_logged_in() || is_super_admin() ) {
		return;
	}

	$is_dir = bp_is_members_directory();

	// if we are on directory and force profile is not active
	// return.
	if ( $is_dir && ! $fp_active ) {
		return;
	}

	$follow_count = bp_follow_get_the_following_count( array( 'object_id' => get_current_user_id() ) );

	if ( $follow_count >= 4 ) {
		return;
	}

	if ( $is_dir && $fp_active ) {
		remove_action( 'bp_template_redirect', array(
			BD_Force_User_Avatar_Helper::get_instance(),
			'check_or_redirect',
		), 1 );

		return;
	}

	bp_core_add_message( __( 'Please follow 4 or more members to continue.' ), 'error' );

	bp_core_redirect( bp_get_members_directory_permalink() );
}

add_action( 'bp_template_redirect', 'buddydev_check_or_redirect', 0 );