I think I have fixed it...
There are 2 files on the appliance, so SSH onto it and then find them ....
/opt/vmware/mobility-service/conf/mgrconfig.yaml
/opt/vmware/mobility-service/conf/connconfig.yaml
Within these files change entry in the files to the below
enableVcSsoAuthentication: false
Then restart the service : /etc/init.d/mobility-service restart
This worked a treat for me.