MAM Enrollment failing with Error Message"Request Failed"

You will see the following error messages in the Secure Hub Logs: 2016-09-06T22:55:17.691+0400INFO 4called for store with error Error Domain=com.citrix.Receiver.AuthManager Code=6 "CAMAuthManErrorCodeOutOfLicences" UserInfo=com.citrix.Receiver.AuthManager.DiagnosticDescription=The gateway is out ...