I just got another P4 (new) and attempted to do a firmware update which it requested and it failed midway through the process. I then hooked it up to my computer to the assistant 2 app I then refreshed it to factory default firmware and then did the updated firmware from the computer successfully. Now when I launch the go 4 software it says The drone needs to be activated (it has yet to beactivated). It says this within the software where all those other items are listed that say OK like IMU etc. I tap on where it says aircraft needs to be activated and nothing happens. I go back to the white screen at the beginning of the launch and nothing happens there either. No pop-up letting me Activate. So, I uninstalled the app and reinstall it with same issue. I am logged in with my existing DJI account. I then tried installing the software on another iOS device with same result. Are their servers down or something?