I just picked up a Drivo, it worked fine the first time I tried Zwift, but now it is no longer recognized as a power source. The cadence and speed are fine.
It shows up in the Speed Sensor+Classic Trainer search, but the Drivo isn’t listed here.
Using an Android 6.0.1, Macbook pro/Sierra and Zwift Mobile Link
I do not have an ANT+ dongle.