On your cloud console, go to the Virtual Machines tab, then choose the particular VM you want to create the network interface in.
Click on Networking > Network Interfaces > Physical Network then:
- Select public 1 (Global) from the dropdown list
- Add IP from Networking > then add IP Address/es
If you still cannot access the server via SSH, it is possible that the change of network interface was not done completely.
To apply the change of network interface on your server, you will need to rebuild your network through your cloud console.
See image below: