Problems with turning ERG mode off during sprint training

Hi there,

I have the Wahoo Kickr Core with Zwift Ride. I use the up-to-date Zwift app on my windows PC. Firmware of the Wahoo and all the other components is also the newest one. I also adjusted the Wahoo Kickr via App.

As I tried the first Zwift sprint training with 10 x 10 second all out sprint intervals (training plan “Build my FTP”), I encountered the following issue: Zwift tells me to switch of the ERG mode via the Zwift companion app as the ERG mode reacts to slowly. But when I do so, Zwift shows 0 Watt and I stop as there seem to be no input anymore from the Wahoo to Zwift. Only I turn ERG mode back on my avatar starts to cycle again.
I tried to stay in ERG mode, but the pedaling resistance is way to weak to have a proper sprint training.

Anyone has any clue how to fix this issue?

Cheers,

Leon