As noted above, can either of you please provide a lot more information on what isn't working? Is it the modal popup, the Joomla login functionality, the social login functionality, the avatar when logged in, the logout button, etc?
Also, can you test to see if the functionality that isn't working on your site is working on this site (sourcecoast.com)?
Any information you can provide, along with the phone and OS you are using will really help. Without that, it's very difficult to diagnose anything.
Thanks,
Alex