Play installer check requires a minimum SDK version of 21 or higher

Play installer check requires a minimum SDK version of 21 or higher. The uploaded App Bundle has a minimum SDK version of 7. Update the minSdkVersion in your app's Android manifest.

please help how to fix it

See this post and the one below

What do they mean by "Import and drag it onto the screen"? Which screen are they referring to?

The working area of App Inventor

Taifun

It doesn't matter whether you drag it to Screen 1, Screen 2, or Screen 3, etc. The result is the same. The minSdkVersion is declared as 21 (Android 5) in the Manifest.

Try to avoid using older versions of android. Please avoid using versions like android marshmellow or kitkat which include android 1,2,3,4,5,6,7. Try to use android 8 or newer

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