We have an installed version of Membership Plugin at this

We have an installed version of Membership Plugin at this domain: http://www.constructionzone.co

After free account registration here: http://constructionzone.co/register/?action=registeruser&subscription=1 users are auto associated to one of our membership plans as per the options > general(tab) > user registration setting in the backend.

The PROBLEM is after registration the success page that is shown is this: http://constructionzone.co/register/?action=registeruser&subscription=1

We want the success page for registration to be this: http://constructionzone.co/welcome/

We have the above allegedly addressed via the 'Membership Pages' tab in the settings using the 'Registration completed page' option that should redirect to the "http://constructionzone.co/welcome/" page after completion but it does not.

Please assist.