Tacx genius t2020


I have so far been using Tacx 4 program, but have recently signed up for a monthly Tacx subscription and downloaded new Tacx app on Win 10. Smooth experience so far.

Then i plugged in my ANT+ dongle, but the desktop app refuses  to find my trainer. I am using Tacx Genius t2020. 

Can someone advise how to connect the new app and the trainer? I’m getting really frustrated.