If you're missing your prize from the previous event, please tap on  the Channel 3 Van or Boat located near the Game of Thorns and Shiver Me Timbers event locations  to collect your prize and view your leaderboard! This is what they look like:
 
If this doesn't work, try checking your mailbox. You can access your mailbox in these two locations:
 
 
If all else fails, contact our support team and send us a screenshot of your leaderboard. Your leader board will look like this with your name highlighted in blue. Please make sure your name is visible: