Greetings! The video can be uploaded to a site, like YouTube, so that it is available via a link. Then that link can be edited into your post so that other players or Bungie's support teams can view it. As far as troubleshooting this goes, I've seen that moving too quick between the first room (with first sets of Lightbearer Knights) and the boat station room (where boat/ferry is first seen) can cause a checkpoint to not complete. This checkpoint will stay active throughout the strike, causing loot to not drop.