Enable Local Authorization

I installed rancher and is open for public. When I want in rancher activate Local Authorization, I can´t do it. When I want click on this button I can´t do it. It´s looks that isn´t possible. Can somebody say me, what can be a problem? Does I need a external DB, when I want create an account?

Type the same password twice?

Yes, I type the same password twice. When I choice in Access Control Acttive Directory or anything else I have the same problem. The button Authenticate I can´t use.