Private domain name problem

Hi everyone I am new with ferrum. I installed Ferrum and started the GUI I am traying to change the private domain but I cant. I tried to many times but I cant go next.

Thanks in Advance

Best Regards

Hello Mehmet
Please type , and try it. if it does not work, don’t change it

After configuration finished. Also you will be able to change it.
Config is under /Settings/Common. Don’t forget to restart after changing domain
with ferrumgate --restart on bash

Thank you very much it is done and working.