Widget suddenly changed to something else and dissapeard

fleksjobbernetvaerket.dk Running lates WP with lates Pro theme. Suddenly this just happend out of the blue. --------- I have the widget "CT Advistesment" on my primary sidebar. It works fine on almost all pages and posts... just not and very suddenly on the 'front page' ... but instead another widget appeard on the sidebar, I'm really nervos as i used hours to make it all work