*********UPDATE*********
I have a problem with the publication of the APP.
Compiled Used Android Versione: API26
Minimun Android to Target: API21
Target Android versione: API26
if I use this configuration, google play store accepts the APP but the GPS and the camera are not enabled (I use the Montemagno plugins).
Compiled Used Android Versione: API26
Minimun Android to Target: API21
Target Android versione: Use Compile using SDK version
if I use this configuration, play store does not accept it because mo says: Users using the APK with version 9 code and with SDK target 23 or later will receive an error message when they try to upgrade to this APK, which targets SDK 21.
if I manually install the APK on the phone, in the first hypothesis it requires authorizations for the plugin of montemagno; of the second hypothesis, everything is wonderful ...
What's going on?