Agentry 7 - SMP 3.0 - This Client is not Logged into the Server(2)

I've deployed my Agentry app to the SMP 3.0 server and I can access it using the ATE. I'm now trying to access it on my iPhone and iPad but I'm getting the message this client is not logged into the server(2) on the Agentry Client Transmit screen on the iPhone and iPad clients.

But if I look in the management cockpit at users it shows that the user is logged in.

This just started happening. I'm not sure if I've missed a setting somewhere or what. I don't require authentication for any of my apps.

Thanks,
Dave