Why Notion 6 doesn't play back any sound after sending midi data from Studio One to Notion 6?

- I really liked that feature of sending midi data from Studio One to Notion 6, but somehow my Notion doesn't play back any sound - the sheet is all correct and when I hit "play" in Notion it shows that it's playing back, but no sound unfortunately. When I just opened Notion and tried to compose something from scratch all sound was there, but when I'm using that Studio One feature just like at the begiing of the video, no sound. I think I did everything correctly like in that video.

System specs:

Asus Zenbook , Windows 10 Home, I'm using both trial versions of Notion 6 and Studio One 3 - all latest versions, I'm using my computer's internal sound card - Asio4All latest driver. I hope someone can help me. Thank you.