Everyone should get the crystals and shard shop currency PERIOD. This was a bug and everyone should get the same compensation for it. It would be no different than if any other previously completed event popped back up. If the EP, GMY, CLS, BB-8, JTR, R2-D2, C-3P0, Chewbacca, Thrawn, JKR, DR, or Padmè event popped up and allowed you to complete it again for shards, you would know it was a mistake. So why would anyone think that it isn't a mistake that you were able to do the Malak event again and earn extra shards.