Then you my friend are a very lucky person.
I followed up with the dji Store today and they've accepted a Warranty Claim. All the grief I've suffered is the result of a hardware failure with Compass 2. I'm waiting for approval for a replacement unit under warranty.
I may end up a very happy camper but, after my experiences to date, the air has certainly leaked out of the fun balloon

. Hopefully I can get a compass calibration working with the replacement P4Adv. Then all I need to sort out is the Mainland Chinese Phone Number issue and try to get pinch to zoom working. I have used a Samsung tablet that supports pinch to zoom on a std P4 so obviously some Android devices do support pinch to zoom. It's not just available with Apple tablets or mini-tablets.
I'd appreciate knowing if anyone has used pinch to zoom (up to 2x) on their P4Adv (or even on there P4Pro). I'm just hoping that it works the same as it does on the std P4.
One thing I am happy about is the 2K video from the HDMI Output module from the P4Adv. Very nice quality compared to the std P4.