Change user portal url

I did a small change to test:
In /etc/ssowat/conf.json file, i changed the value of “portal_path” from “/yunohost/sso/” to “/” then when i open the domain like www.domain1.com then the user interface is being opened and a user can login and logout successfully - so far good.
But now iam not able to access the admin interface. Whenever i type the admin url, the user interface itself is getting opened.

Any clue here please.