Firstly, the warning, you are likely flogging the proverbial dead horse with Opus and Android.
The best instructions for publishing the project are in the Opus help file. It explains step by step what's needed and what to do.
If Opus is still able to create an Android package file (APK), it probably won't be accepted by the Play store. A while back, I had a discussion on this forum and I think a hack was worked out but whether that is still relevant, I don't know.
If you simply want to load it onto your own device, then you need to sideload it. See
https://www.howtogeek.com/313433/how-to ... n-android/Before you start any of this, make sure that you publish it to HTML5 and see whether it runs in Chrome / Edge first.
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