Play Store signing issues are discussed here https://community.appinventor.mit.edu/search?q=play%20store%20signing .
There are several that seem to discuss your issue. Perhaps APK signing with Google Play
Good luck.
Play Store signing issues are discussed here https://community.appinventor.mit.edu/search?q=play%20store%20signing .
There are several that seem to discuss your issue. Perhaps APK signing with Google Play
Good luck.