I can not use the Zwift Link application (android)

I’m a new zwift user. I have an android smartphone, I have installed the zwift link application.
The problem is that I can not figure out how to start an activity, nor how to pair the sensors with the program (zwift link).

I await an answer
Thank you

The Zwift Mobile Link is a companion app for Zwift. You will need to install the Zwift app on a PC, Mac, iOS devise or AppleTV to ride within Zwift.

Zwift on Android should be coming to beta sometime this year.