I am in the trial period of Roon and inadvertently deleted the programme and now I can no longer download it from the site.
There are no restrictions on downloading Roon.
Can you confirm your are using this site … Roon - Downloads
What file are you attempting to download?
What error message is being reported?
Diagnostics indicate that an active RoonServer instance is now associated with your account. Are you still encountering this problem?
Third-party firewall or antivirus software can sometimes prevent Roon Remote from accessing RoonServer, even on the same machine. if you haven’t already, be sure to add Roon and it’s sub-processes as an exception in the firewall whitelist for any additional security you’ve installed.