Do you have the browser extension installed?
Go links will only work if you have the GoLinks browser extension installed or if you have a DNS entry integration.
Clearing your browser history
Clearing your browser history may result in go links redirecting to Google search. To fix this, just click here to re-enable it, or type in http://go. You’ll need to add http://go to your history for your browser to resolve the links by default.
If you have the extension installed, you will see this banner as well:
Simply click the banner to enable redirection again which should fix the issue.