If you reach out to the support team they will quickly help you. They helped me extremely quickly yesterday to something that bugged the hell out of me.
I’m sure there’s help pages in the Knowledge Base on Roons website.
Can I downgrade from Roon 2.0 to Roon 1.8 anytime?
The answer is (unfortunately) no. The window to downgrade will be open for approximately 6 weeks from the release of Roon 2.0. During this time you can move back to 1.8 by following the instructions below.