I have configured the app (v3.9) for both inbound and outbound calls, and configured Ooma to ring both the Telo and the app.
It seems to be working: I can see incoming calls, and choose to Decline or Accept, but there is no ring tone! It's not much use to be able to answer calls if I can't tell when I'm getting them. What am I missing? How do I configure a ring tone?