Too much hassle to achieve something simple.
Documentation isn't as easy to understand as it should be.
In the end, knowing HTML, CSS, JS, won't get you as far as it should to end up with .apk.
I didn't gave minimal rating because I accept my noobishness when it comes to applying changes to this app, but than again, I've ended up using other Codecanyon app and my knowledge was more than sufficient to build the proper app.
I would suggest investing some time in to making solid documentation.
Pointing users to Ionic forums doesn't quite cover it, because, if I wanted to gain that knowledge I would dedicate some quality time in to learning Ionic and build my app from scratch.
You guys are one of the best sellers here so you should live up to that status and make the app more user friendly.