Is the ZC iOS turn button actually working in my setup?

Brand new to Zwift…
Trainer connected to PC with ANT+. Using ZC on iPhone 8 (iOS 14.3).

I can’t get the turn functionality to work in ZC. When I get close to a route split, and it is shown on the PC screen, then the key in ZC just flickers rapidly, and nothing happens when I try to press it.
PC is not so close that I can just press turn here, without getting off the bike.

Am I doing something wrong, or is there an issue here?

br Lars

I only have the ‘flickers rapidly’ situation in the last second or two before the turn option expires. Perhaps you just need to make the selection sooner in the process? I think you have about 15 seconds to decide.