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.
You can download the GoLinks browser extension for your browser here.
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.