Thank you for contacting us about the issue.
There is now way to download or revert to the AppBuilder 2.14 release, as there are changes on our server side which are not compatible with it.
Further, with AppBuilder 3.0 we introduced Gradle build for the Android platform. It is the only significant change there that could have caused the faulty behavior on your side. Still, as I don't see anything wrong in the provided plugin.xml
file, can you please share if there are any errors printed in adb
when the application breaks?