It's good to hear people are using the app and finding it useful. The Google Play Store says there are over 9,000 net downloads to date.
I know the developer quite well ;-) , and he's very easy to reach and eager to please: email to ctodeveloper.arubanetworks@gmail.com or post here and he will pick up on it. If you have any suggestions or bug reports, please send them in: it doesn't take long to code up most of these ideas and turn around a special build: in fact, that's one of the most rewarding things about app development, it can be very fast and responsive.
And I'm always looking for Beta testers: get a Google+ id and join the community here https://plus.google.com/u/0/communities/100638199649434481720
This is what the Handover tab looks like in the latest Beta version with OUI interpretation:
As for Instant, it's something that I've overlooked so far: I'll check into what's needed to make it work properly, but I think for now if you ignore the errors the Controller tab should be functional: once it is logged in, it just executes what you write in the text box.
Best,
Peter T