Roon Radio doesn't work. Support is not responding. What should I do next?

Hello!
My problem is described here: Error: Limiting Roon Radio to Library
The support couldn’t help me, and then stopped responding at all. I consider this attitude unacceptable for software that costs $ 119 a year.
Tell me, can I count on further support assistance?
I bought Roon as the best software player, but faced complete neglect on your part.

Regards
Dmitry