Can you do me a favor and rename them to H91 and H92, and see if this makes a difference. We're a little mystified otherwise.
Changed the names to H91 & H92. Both H9's are remembering the custom name, iOS 9.2 sees the H9's as H91 & H92, Windows 10 sees them as H91 & H92. Only H9 Control is displaying the original names for the H9's (H9-SerialNumber) after a app restart as if the custom name does not exist. Is there a difference in the way iOS & Windows are reading bluetooth names and how H9 Control reads bluetooth names?
There is quite likely a difference. I'll talk to our H9Control expert and see what he thinks.