woocommerce measurement price calculator

Hey Guys, i am using the Woocommerce measurement price calculator. i think i`ve configured all the parameters correctly. When i am going to the Product-Detailsite where i am using the calculator. The Checkboxes and the price are not showing. I dont know whats the Problem here. I am using the Kava Theme for Wordpress. Have anybody a Solution?

Best Regards

Is it an additonal plugin that you have added or did it come with the theme?