I just called villa ticket office and they said that i will receive my ticket through the UEFA app 24hrs before the game 
I will be there by then and am paranoid technology hates me - went on the UEFA app today and its just unusable
Should i panic? Young people please offer some confidence to an old fecker 
Don’t worry it will be fine, I’ll be in the same boat but I’ll be panicking about flights and train journeys before I panic about the actual tickets.
I’m just glad I’ve got one through the club this time, for Istanbul I had to use a burner phone that had never used the UEFA app before, and then sign in with a username the guy gave me, who I was paying through the nose for the ticket for, but it all worked out in the end.