Google play console, SDK invalid

MIT App Inventor Help
1

Google Play installer verification requires a minimum SDK version of 21 or later. The submitted app package has a minimum SDK version of 14. Update minSdkVersion in the app's Android manifest.

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(Google play console, SDK invalid) ) explained

If you intend to develop commercial programs and post on Google Play you really need to read and understand most of the posts you see in the links above. :disappointed_relieved:

There is certainly a solution for YOUR issue.

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protip: try a search in the community to find the answer
https://community.appinventor.mit.edu/search?q=min%20sdk%2021

Taifun