I just purchased the BringGo app and it works wonderful with my Samsung S4 in our 2014 RS sedan. I will probably make the full purchase one the 30 trial is over. One Tip...download and Read The Manual.
After reading your post I downloaded the manual. There are a few things I didn't figure out already, but none that fix the issues.
I have had many known addresses not work. Either I would have to use a different number like 400 instead of 426 then look for #426 when I got close. Or I've had it not show the address in that town. I have to use my phone to find a neighboring town and try that one.
The points of interest are almost useless. If I select emergency, hospital it goes to a gynecologists office. Emergency, police takes me to someone's house 3 miles from the police station. Maybe its the chiefs house?
The traffic is a myth. It says there's traffic when there isn't, and doesn't say there is traffic while your stuck in it.
In my opinion, bringgo is the worst navigation app/device or whatever you want to call it I've used.