How to use for login/signup

If you want sign up forms you should look at the replacement for Easy Modal, https://wppopupmaker.com and the AJAX Login Modals extension https://wppopupmaker.com/extensions/ajax-login-modals.

If you want to roll your own you will have to find a login / registration plugin that uses AJAX and put those forms in the modals.

I have done that, but it doesn’t seem to be working.