Have just received my OBD2 ELM327, but the DashCommand App won't connect. It seems to know it's a 2007 Audi but fails to connect. (I don't recall entering any details when I installed the App) Could there be any connection settings I need to change. Shall try and get hold of a Laptop to try with that as it came with a disc that I assume is more than just a user guide. Any help much appreciated.