This began yesterday. I have a leaderboard for total points scored playing my game. The display name for all players begins with a "Player-" prefix and then a set of random numbers after it. For this one particular user, the display name is the PlayFab ID, not the standard "Player-1234567". When I look at the leaderboards within the game, only the top score appears. Nothing else.
When I looked at the leaderboard, this player's high score matches the player in second place. I decided to clear their score to 0. This dropped the player down the list and the leaderboards seemed fixed. A few hours later, the player loaded the game and their high score again matched the player in second place. But, the player name is still the PlayFab ID, not the "Player-123456".
So I then deleted the user. This seemed to fix it, until they logged in again and once again, their score matches the person in second place and the display name is the full playfab ID. When I try to click into that player, the player doesn't exist. I'm redirected to the "View all players" list.
What should I do? I can't access this player through playfab. I can reset their score to 0 until they log in again. Whenever this individual logs in, they destroy the leaderboard. No idea how to proceed.