PLEASE HELP… Modal window is wrong

How can I get the same login register form as on the screenshot? I have now twee separate forms. One for login and one for register. How can I fix this. I still use an the 3.6.1 version of wordpress. Is this the problem?
This is my site http://luxuryvintage.nl

If you klick on one of my menu items you will see what I mean.

PLEASE HELP

http://ww.wp.xz.cn/plugins/zm-ajax-login-register/