For Android-only users: Upon using the upgrade code, the original Android activation code is replaced by cross-platform access for 8 devices; the upgrade code becomes invalid, and the new entitlements are applied directly to the original Android activation code and linked to your email address.
For dual-platform (Android & iOS) existing users: Upon using the upgrade code, the original Android activation code is replaced by cross-platform access for 5 devices, linked to both your email and iOS authorization. Additionally, the original Apple ID allows for activation on an unlimited number of devices via the "Restore Purchase" function.