App that I developed in Android Studio and I have it in PlayStore.
I have improved it and I want it to be paid. I have learned that a free application can not be made for payment, unless the name of the com package is changed.
I did it and I can not find in my project any trace of the previous name, only the new name.
By generating the .apk and uploading it to PlayStore, it tells me that the package name already exists and mentions the old name; that is to say, google play is the same package of the free app.
It is worth mentioning that the improvements and modification of the app was made working on the same project and in the end I changed the package name.