Any experiences with AirMap app for getting flight requests accepted in the US?

I will be travelling there soon and have never been in the US with a drone so was wondering how the app works!

For anyone that doesn't know what I'm talking about:

https://support.airmap.com/hc/en-us/articles/115002321792-How-do-I-get-Automated-Authorization-with-AirMap-

Hi, thanks for creating this thread. We're hoping that one of our customers could provide further information in regards to your query since. I'm afraid that the application is not produced by DJI and we can't provide inaccurate information. Thank you for understanding.

I haven't been able to get Airmap to connect to my DJI Mavic Pro controller.