Mobile connectivity issues

I have Huawei p20 pro and I trying to use zwift only on my mobile without the PC use. On pc I have ant+ garmin and trainer, heart rate, cadence and sensor working perfect. (everthing is garmin)
If I open zwift on mobile and trying to connect with any device nothing works. Just blinking the ant for searching the devices, but nothing to find. I have OTG cabel with ant+ garmin connect in mobile, but it doesn’t working. Have you somebody any idea, how can it work on this phone?
Thanks for ideas.