Pixel 3 pairing issue

Because I was having issues with my laptop setup I ditched my Garmin ant+ only setup for a Garmin Bluetooth so I can use my phone instead.

My phone is a pixel 3 and my trainer is a Kurt kinetic.
I’m using Garmin cad and spd sensors.

When I pair the cad sensor it works fine when I go to pair the spd it works but I lose the signal for my cad. When I reconnect it the spd drops off.

I never had this problem with the ant+ sensors.

See image below. It shows the spd working but 0 cadence is shown despite it showing as connected.

Anyone know why this is happening?

Thank you

PS I am perfectly happy with using zpower and not interested in upgrading to a smart trainer but thank you for the advice