The SSL certificate for api.gogrid.com expired yesterday. We are working to get it renewed and hope to have the problem resolved within 24 hours. Calls the the GoGrid API will still work correctly in the meantime if the client is configured to accept the expired certificate. We apologize for the inconvenience.
This issue has been resolved. The SSL certificate on api.gogrid.com is now up to date. Please let us know if you experience any further issues with this.