This unknown about how many UAR got credits is going to be the key here - could have had exact qualifying numbers for ballot with that. going to be anywhere from 55% - 65% chance of success based off the remaining count so far and the educated guesses around qualifying supporters.
I could be wrong but I honestly think it’s minimal.
There was a capacity of 6,000 more for the West Ham game (with the stand open) than Leicester (55k vs 49k).
The only people who have the credits without attending are ACS members who bought tickets in the Upper Anfield Road who the club were unable to relocate - I would assume that when the club sell ACS tickets at the start of the season they do so on the basis that the away team will take the full amount available to them (6k) where as Leicester took 2.7k.
I just can’t see how many people the club wouldn’t have been able to relocate into the seats not taken by Leicester and even then those people would have been able to get one on all members easily enough - I take the point that some will have not bothered and just taken the credit but I’d be surprised if this is though to significantly alter the odds.