After updates, I had an issue a week ago with the MF app freezing ten minutes before a show. Closing it and opening it again, powering down the iPad--nothing restored control. Luckily I had a spare iPad with me, and the show ran fine from it. I ended up deleting the MF app and downloading it again on the problematic iPad. It appeared to be working normally the next night, but half an hour before showtime, both iPads froze at the same time. This time, however, closing the apps and opening them again got them working right away. Both times, they froze when I went to double-check monitor settings. I contacted support and their only suggestion was to force a new firmware update on the mixer. I've done that but haven't run a full show since then, which I'll do tonight. Hopefully things will go smoothly. Both iPads used are new iPad Pros, we use AirPort Extreme, and all the updates were current.