Mine and a friends nearby also failed to save an hour long time lapse, at 60 sec intervals. Both Seestars ample free storage space available and connected to external power supplies. The iPad showed mine was running and taking photo every 60 secs and I could see the timer function working. Go home from the eclipse and the only video was a 2 second time-lapse .
This is inexcusable to have such a fundamental failure, especially during such an event as the eclipse!
In all honesty, ZWO, this reeks of sloppy coding and poor software release management