Impossible to login in Pie Register plugin

Hi,
I have just installed the plugin but after doing the logout your invitation to register is not display and at the end of the page I got the normal WordPress invitation menu displayed after your space not display logo and Pie Register invitation (It is blank, no display).
It seems that is a conflict between You and the WordPress registration.
It seems that the login goes to wordpress and not to your registry address or the your display information doesn’t work (logo for example we got blank instead of the image logo).