Qgc not connecting via USB cable on Android tablet

I use Qgc on an Android tablet using RFD900x SiK radios to communicate with my Orange Cube equipped quad.

For some reason, I can’t get this platform to connect to the vehicle via direct USB cable.

I’ve tried the stable release on Google Play store, the daily version on Google Play store, and the download on the Qgc website.

Not only does Qgc not “discover” the connection, but when I create a new Comm Link in Application Setup, it fails when I click the “connect” button.

My Android tablet is a Samsung Galaxy Tab A7 running the latest update of Android.

Thank you for any advice. If it’s a bug, please accept the submission.