You joke but it's quite clear a significant proportion of the villa going public don't understand how, don't know they need, or (as per OBE) simply don't want, to use a mobile wallet for their ticket.
If we assume those on this board are more likely than the average to use a phone wallet, then, and one of our isn't, then the 40k going to the game will present thousands that won't be doing it for one reason or another.
It was also the first game they had stopped screenshots from emails working so will no doubt have added a lot of delays as people then would have had classic Villa Park signal to contend with to get the original ticket back up on their phone.
Fixing the small things should include providing signal/wifi at the whole ground, not just the GA+ seats. As the Holte End expected it would when surveyed.