WP Posts Carousel uses the featured image of pages/post to create the carousel automatically base on the chosen category in its setting ..
so the only way to make it work is by allowing the WC Vendors Plugin to automatically create a page for the vendor’s shop page with the vendors shop icon as a featured image ..
currently the only way i can think of to make it work is by manually creating an empty page as a vendor shop page and set the shop icon as the featured image ..
then use a redirect plugin to redirect that page to /vendors/shop-name ..
hope you include this feature in the coming update ..
have a static customize-able shop page for each vendors is way much better ..
each vendor could even have access to edit his page in the way that he/she like ..
thanks for the great app you’re proving us ..