your settings changes and all live product will be the same.
just navigate to wp-content/themes replace the dokan theme with a new downloaded dokan theme and from wp-content/plugins replace the woocommerce plugine with a new downloaded WooCommerce (2.1) plugin.
the pop-up slider is ‘woocommerce' plugins function. so this could solve your issue.
And yes I have re-activated all your plugins like as it was.