Frustrating experience.

The experience of using this app with iPads is riddled with bugs.
My test bed, a Macbook Air 2011 i7 4GB RAM running OS 10.11.5. The iPads are iPad Mini and Ipad Mini 2G, latest iOS as of this writing.
Both are running the latest Air Display Apps (Air Display 3).

It took about 5 reboots and many different configurations before I got it to work.
But …
1 - After a reboot the iPads are in the wrong arrangment and in mirror mode. All my settings got ereased.
2 - Cant leave the Air Display app even for a moment on the iPads. It will screw things up. So forget about changing brightness or anything else. If the USB cable becomes loose it will screw up the settings.
3 - Host App cant remember which iPAd goes where in a multiple iPad scenario after and incident, including USB cable disruptions, leaving the app on the iPad or anything !!!!!!!

There seems to have been absolutely no quality control.
A frustrating experience of arranging the displays, over and over again and arranging the apps/windows on those displays.

I am a developer and IT. I would NOT use this app, takes more time than it saves.

Observer2010 about Air Display®, v2.0