No signal - saris Magnus

Hi I’ve been using Zwift for over a year successfully. I’ve downloaded the new update for ios this morning, attempted a ride and after 30 seconds-1 min riding the signal drops out and watts go to - -. I’m using saris Magnus trainer. Signal completely drops and I have to turn the trainer off and back on. I’ve attempted this serval times and keeps happening. Any suggestions?

Have you checked to see if there is a firmware update for your trainer?

Hi Daniel, yes all firmware up to date.

Have no issues when the trainer connects to rouvy.

And was working fine before I updated Zwift app