No DTC codes to read – Chevrolet App Review

I get a Wifi connection but when I run the app it fails to read any codes. I have 2 OBD2 scanners and both give me the same message. Dash Command works fine. Is there an OBD2 scanner that you can recommend that will work with this app. I have a FOSEAL and a generics scanner, both of them WiFi.
Review by Nowverizon on Chevrolet App.