Thanks for reply,I reboot my router and pc multiple times and find out that 104.aaa.bbb.ccc and prd.roonlabs.net need to be proxied. As I live in China, international network can not be connected occasionally. Can you provide domain names that local server need to report my IP to the server? I can add them to my proxy list.
Thanks for taking the time to write in! Unfortunately, based on your status, and if no upstream services are reliable, you may need to try a different proxy service or VPN.
Roon however isn’t equipped to provide guidance on how to bypass state firewall restrictions, but users have gathered useful anecdotes in threads like this: Is Roon banned in China?
I hope this may help as it falls outside the scope of support.