could you paste a screenshot of the Control Panel (it should listen on port 8000)? It's weird that you cannot see the Start / Stop services, or that you cannot log using the CloudAdmin account, it seems that something was wrong in the installation phase. This is what you should see in the Control Panel:
Do you see the Debug link in the Control Panel as explained here? It should be at bottom right:
Then you could generate the debug info an upload the gzipped file with vOneCloud logs although as the documentation warns you, you should have a look that no sensitive information is in the logs. If you cannot find the Debug link or the debug task fails, maybe you could upload the oldest /var/log/one/oned.log file (checking again that no sensitive info is there). Maybe we can find what may have failed.
In your case and according to your feedback I'd try to reinstall the vOneCloud appliance in a different VM and check if it works as expected.