To access a Rako Hub on OvrC, you need to set the port scan for HTTP to other. Its been reported that a Rako hub will only show an available SSH connection. This is because port 80 gets redirected to a secure page sub domain which OvrC cant scan. 

Then either change the default HTTP scan to 'Other'

Then go back and perform a 'Network Scan' and leave it to finish. 

Then go to the Rako Hub and you will see 

Open the connection and you will get a web link, copy the URL and put into a web browser and you will be able to access the hub

Changing the setting to Other does not affect port 80 on existing devices.