So let's say for example you got two leaderboards:
Leaderboard X and Leaderboard Y, if Leaderboard X have less than 2k players and you reset the leaderboard with prize table that grant items according to ranking of 1-10 , 11-50 and 51-200 all the players that valid for that granting get the items without any problem.
But if Leaderboard Y had over 2k players and you reset the leaderboard with prize table of same behaviors of granting items according to ranking of 1-10 , 11-50 and 51-200 some players in between in this ranking doesn't get their items for some reason.
So what is the actually problem here ? I got reported atleast 1 out of 10 in ranking 1-10, 2 out of 11-50 ranking and 5 to 10 out of 51-200 ranking got this problem.