internal-testing works but not connecting to actual device

Running the sample scene from the Unity package, everything works as expected when using the `internal-testing` HyperateID. I get `Connect!` then `Connection open!` debug log messages. Logging the message itself, I get this at regular intervals: `Received message: {"event":"hr_update","payload":{"hr":64},"ref":null,"topic":"hr:internal-testing"}` All good. But when I use the devide ID I see in the phone app, which is in the format `LIVLOV V9-1234567` although I still have `Connect!` then `Connection open!`, I then see the event as `phx_reply` with an empty response. First I see: `Received message: {"event":"phx_reply","payload":{"response":{},"status":"ok"},"ref":0,"topic":"hr:LIVLOV V9-1234567"}` then this is repeated at intervals: `Received message: {"event":"phx_reply","payload":{"response":{},"status":"ok"},"ref":0,"topic":"phoenix"}` No HR data. I've tried changing the HyperateID to LIVLOV-V9-1234567, V9-1234567, 1234567, uppercase, lowercase, nothing works. https://app.hyperate.io/YTP does display the BP measurement so data is getting to the PC. What am I doing wrong? (I've also tried the sample project and no connection there either) There's not a lot of onboard help anywhere that I can find. Are there does beyond the HypeRate DevDocs on github? I'm seeing the 'Required websocket messages' section (https://github.com/HypeRate/DevDocs#required-websocket-messages) but there's no guidance on whether these should be used in Unity. I'm guessing that's already taken care in the code from the package as I can see SendWebSocketMessage() and SendHeartbeat() are taking care of the `phx_join` and `heartbeat` events. So where does `phx_reply` fit in? Seems to imply there's a reply and the response status is "ok" but no data is coming through from the device. Any help would be much appreciated