Impossible to active or not links in Top menu


I can’t active ou unactive a link in :

Top Menu

Main menu

In admin : it’s possible and I saw “statut changed”

I’ve a problem too with mode design… White page if I active “mode design”

My site is available here

I don’t why… I think it’s a cache problem or other… But what?

Any idea?

No problem with block or other… so I think it’s a problem with TOP.tpl or other top tpl field.

Thanks a lot for your help, because I don’t know how check it.

TRy clearing the templates cache. To do it, open in your web browser, where is the address of your store, and admin.php is a script file for the administration panel of your store which was renamed for security reasons.