Pick whichever fits. We read all of it.
For general questions, account issues, or anything the other three don't cover.
support@aitrips.ioSomething not working the way it should? Tell us what you did and what happened.
Missing something you'd use? Tell us what you're trying to do, not just what to build.
Email usually gets a reply in 24 to 48 hours on weekdays, Australian Eastern Time. We don't staff weekends, so a Friday night message tends to land on Monday.
Anything that takes the service down jumps the queue. Everything else is triaged by severity, which does mean small cosmetic bugs can sit for a while.
We read every feature request. The ones several people ask for are the ones that usually get built.