Hi,
Normally this does not happen, anyway to big modifications we recommend to check step by step if everything works.

To edit profile page you can override profile layout with Joomla override feature:
- Copy file from /components/com_jsn/views/profile/tmpl/default.php to /templates/your-template-folder/html/com_jsn/profile/default.php
- Edit new file

Why override?
Because with override you does not change Easy Profile core files, so you will not lose modifications after some update.