Ok, just replicated this again(to check what nozzles I had left to change, from the other conversation), and it isn't quite what the original issue was stated as....but it's still borked.
I was launching each run from within the zones setup, with the expectation that the countdown timer would appear there (it did once, in minutes, I believe, but it doesn't now, and the stop control IS still greyed out there).
If, once I've set a zone running, I then back out a couple of steps, to the main screen/picture of the Iro, that's where the timer is. Or isn't, as it's still not showing any activity...until I exit the app and go back it, where it spends a few seconds connecting to the Iro then quite happily displays a run time countdown in seconds on the main page.
So it's a refresh issue on the app.
The stop icon on the main pic still works, but you then have to go into the individual zone control to run for 0 minutes to clear the stop and re-enable to run icon.
And the individual zone stop/start controls are still greyed out (until the time is changed) throughout this.