WASD+ Cast's USB feature to cast and control your Android devices, you should enable the USB debugging on your Android device first.
How to Enable USB debugging on OPPO Device?
1. Go to "Settings" on the phone;
2. Scroll down and tap "About Phone";
3. Tap "Version" 7-10 times to make Developer options available ;
4. Go back to the previous page and go to "Additional Settings";
5. Scroll down and find "Develop Options"
6. Turn on USB debugging and tap "OK" on the pop-up window.
