Thank you. I can export the version with "Release" unchecked - but when I go to upload the file to Google Play I get the following error:
You uploaded a debuggable APK or Android App Bundle. For security reasons you need to disable debugging before it can be published in Google Play. Learn more about debuggable APKs or Android App Bundles.
You uploaded an APK or Android App Bundle that was signed in debug mode. You need to sign your APK or Android App Bundle in release mode. Learn more about signing.
Your app currently targets API level 28 and must target at least API level 29 to ensure it is built on the latest APIs optimized for security and performance. Change your app's target API level to at least 29. Learn how.
Do you have any thoughts on how to proceed from here?