WordPress.org

General Settings Section. Illustrates using an IDN (in place of the Punycode representation)(If you tried setting the URL field to an IDN without this plugin, Saved it, then tried accessing your site, it would fail. (i.e. this screen shot proves the plugin works - for this IDN anyway,...)

Login to Admin area using the IDN (IDNA aware browsers would do the conversion anyway, so even if you are using the Punycode representation in 'General Settings', you could login using the IDN in the Browser Navigation bar. (i.e So this img doesn't actually prove anything)

Access the Dashboard area using the IDN (same note as point 2)

General Settings Section. Illustrates using another IDN (in place of the Punycode representation) (same note as 1)