Unable to emulate on Genymotion

As you see from the picture below, everything is set correctly however Expo shows me this error;

This computer is not authorized to debug the device. Please follow the instructions here to enable USB debugging: https://developer.android.com/studio/run/device.html#developer-device-options. If you are using Genymotion go to Settings -> ADB, select "Use custom Android SDK tools", and point it at your Android SDK directory.

XDE might not have been able to find your adb path. Can you make sure you can run adb from a terminal and then run npm i -g exp && exp path?

Our guide to setting up Genymotion emulation is available here.

Thanks,
It wasn’t clear to me that guide, but after your words make sense now.
I followed this answer and now it works:
https://stackoverflow.com/a/21185833/4458531