This is my first time attempting to register this app with Google Play. I’ve created a fresh app on the Google Play Console.
expo opt-in-google-play-signing, the second prompt is
Go to the “App signing” tab in the Google Play console, select “Export and upload a key (not using a Java keystore)” and copy the encryption key that is listed in step 1.
However, as you can see in the screenshot, that is not an option. Do you have more general info about what this command is looking for? Google may have updated the UI such that the instructions don’t work anymore.