Just sharing my little new experience for “new” users like me. I have both Thunkable and Kodular (it was named Makeroid back then) accounts but I discovered Thunkable first so I use Thunkable a lot more for almost of my published Apps. I come to Kodular on and off just to get & followup on the new development.
Recently, Thunkable is going to totally shut down Thunkable classic so I have go to Kodular and start making my new apps. I did ONE simple mistake and Error shown. I changed the package name to the app name that I thought it was right thing to do. And all my downloaded APK file (either direct to my computer or via QR download) can NOT open with the parsing error.
So I deleted my package name and set it to default and it works fine.
One simple sign for you to know that the APK file is invalid: the downloaded APK file doesn’t has any app icon or Kodular icon!
Thanks for reading.