Hello and thank you everyone.
I never installed any extension to enable catalog mode.
If Woocommerce is disable, i don’t have “catalog mode” in the left sidebar. There is this tab just when woocommerce is enable. I contacted the dev of my Theme, he said me i have to see with woocommerce directly. Unfortunatly, i can’t contact their support because i’ve never bought any module on their website.
Look my back office here https://nsa33.casimages.com/img/2015/01/23/150123014415948453.png