I just connected my Yamaha Montage synth to help you out testing this great new initiative.
I think I followed all steps but am not able to get it working.
1.I installed the host application and assigned the ASIO driver and correct inputs and pressed connect to make the synth available.
2. On the website I pressed the button to start a session
3. In my client app I connect to the session and it keeps saying, waiting or session start.