Zwift Companion app & Sterzo Smart

Having a problem using my Sterzo Smart with zwift.
I’ve been using zwift for a while with the companion app, no problems with that.
Zwift is using an Ant+ dongle on a Win 10 pc to connect to H3 trainer. All this works great.

Then I got a Sterzo Smart. I understand that I can connect it using BLE through the companion app.
BLE on galaxy S9+ is enabled. Sterzo Smart flashes blue/green alternating.
I get the steering wheel icon in zwift and setting is on ‘use zwift companion’ for bluetooth.
I click the steering wheel icon, but zwift never finds the sterzo.
It doesn’t show up on the screen to select it. Just sits and searches.

Any ideas?