Why aren't you finding your target audience in person and watching them use your app first hand?
Bring someone with you, and have them record every time you verbally explain something to tester. These are good places to improve UI or Help.
We actually found community members of our community and found out when they were going to be coming in to town. We offered to pay for their taxi from airport to hotel, and then met them at airport, had them install the app, and then watched them use it, while they rode to their destination.