The test connectivity on Cloud Connector machine is successful however the domain still shows error with message "No data is available.Try running a health check.If the problem persists,open a support ticket". Below is the snapshot for same.


Because of this enrolment will fail immediately after entering username and password on Secure Hub and user will get an error message "incorrect username or password".
However the SHP for same credentials work successfully. 

The Citrix cloud connector needs TCP 443 opened for all outbound communications to the Citrix Managed Control plane.
Additionally, the Host management and Machine Creation Management capabilities of Citrix cloud also require TCP 9350-9354 opened for communications to the Citrix Managed control plane.

https://support.citrix.com/article/CTX101810&searchID=21827039

Along with the ports following addresses need to be contactable in order to properly operate and consume the Citrix Cloud services.

XenMobile

https://*.citrixworkspacesapi.net https://*.cloud.com https://cwsproduction.blob.core.windows.net/downloads https://*.servicebus.windows.net Additional requirements http://docs.citrix.com/en-us/xenmobile/xenmobile-service.html

https://*.citrix.com https://*.citrixworkspacesapi.net https://*.cloud.com https://cwsproduction.blob.core.windows.net/downloads Additional requirements http://docs.citrix.com/en-us/xenmobile/xenmobile-service.html

https://docs.citrix.com/en-us/citrix-cloud/overview/requirements/internet-connectivity-requirements.html?_ga=2.264502671.1637251173.1501135165-1288963103.1438927164

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Problem Cause

As per the Citrix Document, pre-requisites are not met and theTCP ports 9350-9354 needs to be open 

The domains under resources tab on Citrix Cloud portal shows down intermittently- XenMobile .

https://support.citrix.com/article/CTX101810&searchID=21827039

https://docs.citrix.com/en-us/citrix-cloud/overview/requirements/internet-connectivity-requirements.html?_ga=2.264502671.1637251173.1501135165-1288963103.1438927164