If i log out i got directed to the wrong page

If i log out i got directed to the wrong page http://mijnautomatischegeldmachine.com/beveiligde-inhoud/ instead of http://mijnautomatischegeldmachine.com/

also if i click on http://mijnautomatischegeldmachine.com/ i got directed to http://mijnautomatischegeldmachine.com/beveiligde-inhoud/. I have totaly no clue why the system is doing that when i disable all my plugins it works again after activating all plugins but after a while it comes back, any idee whats happening here.

Thanks.

Kevin.