There could be multiple reasons why your video isn't showing up in your sectioned content within ClubZone.
1) Your video may not be a YouTube video. ClubZone can only utilise YouTube videos within the inbuilt URL links.
2) Your YouTube video may have it's privacy settings adjusted to prevent viewing outside of YouTube. If it's your YouTube video, please verify the privacy settings of your YouTube video.
3) You may not have correctly copied the YouTube video URL.