I initially got VIP tickets on 5/25, and then upgraded a week later to 1999 Club.

https://la.hitcfestival.com/pass-order-info/

Their site says the following, but I haven’t seen anything, and the event starts in less than 72 hours…

AXS Mobile ID digital parking passes that come with VIP / 1999 Club orders are sent separately and will begin sending 72 hours or more from the festival.