Сonverting HA cluster to standalone

[Dubos]

We have a HA active-passive cluster of two FortiGate 600D, I turned on the standalone mode on the Master due to some problems(https://community.fortinet.com/t5/Fortinet-Forum/accidentally-rewrote-the-interface/td-p/201847), and I returned access to it, but the Slave is still unavailable to manage. How do I convert it too into standalone mode?

[Dubos]

I have already tried to change the address in the data center when connecting to the device, but in "edit port" was written "set vdom root". In short, I write "set?" to find out which commands are available and there is no "ip" and "mod" to change its address.

[Debbie_FTNT]

You should have the option 'set mode static'.

Once that is set, 'set ip' becomes available.

If you do a 'show full', does it include 'set mode dhcp', for example?