Wordpress and woocommerce checkbox not visible

I use Wordpress and woocommerce https://wordpress.org/plugins/woocommerce/

And businessx theme https://wordpress.org/themes/businessx/

My problem is the checkbox are not visible and i need to show the checkbox

I add an image to show the problem

What solution i can use to solve this problem and have a normal checkbox ?

If i change theme the problem is solved but i use this theme for my site and i need checkbox visible, I try from 10 days to solve this problem without success.