At first, after clicking login, a page pops up to display a request to open Unity Hub. After clicking open, it switches back to the Unity Hub page. Over and over again, I am speechless...
Then uninstall Unity Hub and reinstall the latest version, and then Something went wrong. Please sign in again.
Then I searched for solutions from Google, CSDN and edge, cleared the cache, closed the firewall, deleted the folder, and restarted, but it was useless.
Finally, the DNS server address was changed to 8.8.8.8 before the login was successful.
It took me more than two hours T_T I cried to death.