I also tried the below code from one of Brajesh’s posts. Still nothing.

function mpp_custom_auto_create_gallery($user_id) {
	
	//make sure that user gallery functions are available
	if ( ! function_exists( 'mpp_create_gallery' ) ) {
		return;
	}
	
	//repeatable block
		$gallery_id = mpp_create_gallery( array(
			'creator_id'	 => $user_id,
			'title'			 => 'Pictures',
			'description'	 => '', //add description if any
			'status'		 => 'public',//can use any of the status e.g. 'public' , 'private', 'loggedin', 'friends' etc
			'component'		 => 'members',//for user
			'component_id'	 => $user_id,//no need to change
			'type'			 => 'photo', //can change to "audio", "video", "doc"
		) );
	
		//let us keep the id in usermeta to avoid creating it again, right?
		if ( !  is_wp_error( $gallery_id ) ) {
			update_user_meta( $user_id, '_Pictures', $gallery_id ); //you can change the key to anything

		}
	//end of repeatable block
	
	//repeatable block
		$gallery_id = mpp_create_gallery( array(
			'creator_id'	 => $user_id,
			'title'			 => 'Private Album',
			'description'	 => '', //add description if any
			'status'		 => 'friendsonly',//can use any of the status e.g. 'public' , 'private', 'loggedin', 'friends' etc
			'component'		 => 'members',//for user
			'component_id'	 => $user_id,//no need to change
			'type'			 => 'photo', //can change to "audio", "video", "doc"
		) );
	
		//let us keep the id in usermeta to avoid creating it again, right?
		if ( !  is_wp_error( $gallery_id ) ) {
			update_user_meta( $user_id, '_Private_Album', $gallery_id ); //you can change the key to anything

		}
	//end of repeatable block
	
	//echo $user_id . '   ' . $gallery_id;
	
}

add_action( 'user_register', 'mpp_custom_auto_create_gallery', 10, 1 );