IonicPush Android dev vs prod problems


Hello, is it possible the SAME codebase run with
ionic run android
, and the one on the store (installed via play store) behave differently?

I use IonicPush and I register the user as well.

The development app execute the registration, get the token and receive the notifications perfectly.
The one on the store (it is the SAME codebase) does NOT even register the user.

Do you have advices? I am lost. (cannot even check with chrome:inspect the store app to see what happens, because it does not appear in the list, [I guess for security reasons you cannot inspect the webview of store signed apps])