Registration Link not working as expected

Hi,

I have created an override in mytemplate/html/mod_easysocial_login/default.php to redirect the registration link to an initial page where new users can decide before registration which group of users they want to join.

So what I did to achieve this, is to exchange the following code

			<li>

				<a href="/<?php echo ESR::registration();?>"><?php echo JText::_('MOD_EASYSOCIAL_LOGIN_REGISTER_NOW');?></a>

			</li>

by

			<li>

				<a href="/sign-up"><?php echo JText::_('MOD_EASYSOCIAL_LOGIN_REGISTER_NOW');?></a>

			</li>

But when I click on the link, noting happens. The URL changes from mydomain.com/login to my domain/sign-up but the page does not change. I still see the login form as before.

The same happens when I click on the Forgot Username or Forgot Passwort link. The URL changes but the page does not. Something is preventing the links from working.

Can you please have a look at this issue? I am stuck and cannot find out how to solve it. SuperUser is included in the additional information.

Thanks
Uwe