I am trying to create a sandbox account, but all attempts to access https://service.devtest.ringcentral.com with Chrome, Firefox or Edge all fail. It just shows a JSON payload with an error message:
{ "errorCode" : "CMN-201", "message" : "Service Temporary Unavailable", "errors" : [ { "errorCode" : "CMN-201", "message" : "Service Temporary Unavailable" } ] }