More than 24 hours have passed since the servers were brought down for emergency maintenance due to the aura bug and people who were in the raid at the time have not received entry tickets.
According to this community post (and several other mod posts), an automated system is working to verify if a game server outage took place and refund entry tickets.
“Heroes of Arkesia, We know how frustrating it is for players to be locked out of timed or ticketed activities when a game server unexpectedly crashes or loses stability. As a few players may have already seen, in an effort to help improve these less than ideal experiences we now have a system in place that will re-grant access to activities in-game that have weekly lockout timers, utilize tickets, or consume a daily bonus (Aura of Resonance) when a game server crash or outage occurs during play…”
This system clearly needs to be improved if it is unable to verify a game server outage caused by emergency maintenance.