Enter Doamin instead of IP address

I wanted to create a server key
There you will find the IP
I host the server privately and therefore I have to use a DynDns entry or a domain.
But I cannot enter a domain.
Can you enter the Doamin?

Greetings Sebastian M.

Hello, you can enter your local Ip if you are running locally. We do not check the IP that you enter at the moment so it is no big deal to worry about.