Console port cannot be changes

I want to change the console port to any other ports other than 443, as I want to run VPN on port 443 to bypass some firewall.
After changing the port to, say 8443, I can’t access the console and need to set it back to 443 in order to make it work.
Can anyone tell me how to make OpenVPN over SSL tunnel?

This is documented in the load balancing documentation.

The OpenVPN server port and protocol is set in the server settings.