I experience some maybe buggy situation with my I-pad.
I sign in an Event where the distance ist given - e.g. 10km / 21.1km. I connect my I-pad with my Treadmill and log in to the event. After the countdown is on Zero, my avatar starts running, but the Clock and Km counter remains on 0 (zero) - not counting up. I have then to stop the event - go out and come back. Then Zwift is searching for other runners … no result …. Stop again and step in again - then Zwift find other runners and the counters are OK.