Hi,
Easy Profile use Joomla API to add custom fields on Joomla user registration/edit profile pages. These pages are the same of Joomla, tabs are generated by Javascript and custom fields added by user plugin.
Registration page use PHP class JForm to load forms as all Joomla built-in components. In your site there is some problem in all forms and this is not due to Easy Profile.
For example try on
http://184.160.110.60:8523/securmedic/index.php/en/features/contact-us/contact-us-normal you can't see any error message and system generate Javascript error (see screenshot)
Error messages on Joomla forms are managed by Joomla.
This Javascript error is given also on registration page and break our code to show correct tab.
How to solve
I thinks this is a template problem, if I go on template provider site
http://www.joomfx.com/demo/?theme=InsightFX I have same problem (Registration and Contact pages). So you need to contact your template provider.