Login and Register does not popup but opens as whole separate two pages

I am trying to build a website using Essential Real Estate Plugin. I want to place the Login and Register popup in menu like shown on https://document.g5plus.net/essential-real-estate/#login-register

However it is not working. Rather than opening as a popup (like a dialog box) , it opens as whole separate page. A whole separate page for login and a whole separate page for Registration.

I have already selected ‘Yes’ on Enable Register tab on Login & Register popup in Real Estate Options-User and Agent tab.

Can some one help me to make it look more like Login & Register popup like here: https://document.g5plus.net/essential-real-estate/#login-register

The page I need help with: [log in to see the link]