I've been following the steps at
https://docs.clover.com/build/create-your-first-android-app/ and found my app on the Clover Mini Dev Kit I have in More Tools. I clicked the Download button and its been dowloading for 3 hours now? This is an app with nothing but an empty activity. Is this normal or is there a problem and does anyone know what it might be? Thanks
Clover apps without a default APK set will not be downloaded to Clover devices.
The fix for this would be to set one of your APK's as default. However, currently you cannot set the default APK for an unpublished app. Since you cannot publish an app on Sandbox, it means right now you cannot have the app downloaded to the Clover device automatically.
I will file a ticket to give developers the ability to set an APK as default on unpublished apps, but for now, the workaround would be to sideload your app into the Clover device, after installing the app to your test merchant.