Aloha is really, really shut down.  When I called their phone line to ask about my existing reservation I listened to a recording and was then told to contact my travel agent (in this case myself) about rebooking.  They are gone.  So as my own travel agent, I called my credit card company and filed a dispute over the charge (which I had not paid for yet) for a service that was clearly not going to be delivered.  Fortunately, the card company will cover the charge.  Next I rebooked my flights on American Airlines which I am pretty sure won't go out of business between now and Summer.  Lesson learned - it is good to pay for a high value visa card and be a customer in good standing so they will take care of things like this!