Long time user. Yesterday (1/19) had a Zwift update push through and install on Windows 10 and now Zwift is unable to pair Bluetooth using the Companion app. Tried both Apple and Android phones using Companion, no difference in the failure to pair. No issues until this last update. Bluetooth sensors functioning fine with other cycling apps, so problem appears to be Zwift only.
Did you make sure that Zwift is searching for the companion app to use bluetooth, it is a selection in the upper right corner of the pairing screen, little gear icon.
Thanks Mike. Never used that option before (system would always go automatically to the Companion for Bluetooth), but just found it and enabled it and everything is back to working fine.