Update:

I was able to successfully connect to the ECU. I simply disconnected the application from the BT device, closed out of it, re-enabled bluetooth and went through the connecting process 3-4 times. Each time it seems the app was able to go further and pull more and more data. At first it was only able to connect, then it was able to collect what information was supported, and finally the information under the sensor tab was gradually populated. The lights on the OBD II connector were blinking and data was transferred in real time (or near real time as there was some lag).

I didn't have any codes to clear but when I issued the command to collect that information it stopped the active data transfer.

If I get a chance this evening I'll try it on another vehicle that has codes.

By the way this is the OBD II connector that I purchased - BAFX Brand from amazon.