I saw that post about a crime too but it's easy to rule out in this case. I wonder if there was a hacking attempt against my account or something.
How long do they take to respond to a ticket?
Bittrex claims it's a maximum of 24 hours, but I'm skeptical about that. If you get unlucky it's probably longer, most of the time it's probably within a day.
Bittrex support uses Pacific Standard Time (PST) and it's now 10:00 AM PST. Its support center has eight hours left before it closes today. Hopefully you will get a reply within those eight hours.
https://bittrex.zendesk.com/hc/en-us/articles/201323140-Support-CenterOur normal hours of operation are 9-6pm PST. Requests made outside of those times may encounter a slight delay. We will respond to all support tickets no later than 24 business hours from receiving it.