From APK to AAB

[Anke]

@Frank_Harr

I have an app that I uploaded as an *.apk forever and a day ago. I'd like to upload a new app and in order to do that, it has to be an *.aab.

"...it has to be an *.aab"

No.

APK signing with Google Play

The easiest way to get around these questions / problems is not to use "Google Play App Signing" as you apparently did before. Otherwise this question would have arisen long ago. I have also used "Google Play App Signing" on some of my apps and have to be very careful every time I want to release these apps. See also here: https://support.google.com/googleplay/android-developer/answer/7384423?hl=en

APK signing with Google Play

I created a new app a few weeks ago that doesn't use Google App Signing. I didn't have any problems with that. Maybe this link helps: https://www.appypie.com/faqs/how-to-disable-app-signing-from-google-play-console