Cannot change port one "second" server


when I create a new server, it defaults to port 25565, which i for obvious reasons cannot reuse. but I am not able to change the port number.

any ideas?

What happens when you try to change it?

Do you hit “enter” after changing the value?

Sorry should have been more specific - I literally cannot change it. as in nothing happens when I try to type in a new number.
I am using the turnkeylinux version (awesome btw), and am logging via chrome.(will try other browsers now)

edit: just tried in IE11 and Firefox. it is apparently a browser issue. I can change the values in IE but not in Firefox and Chrome - it’s like they are greyed out.

this goes for port#, IP address, levelname, and max players, but not for the seed, and the other setting on that page.