I need the banner image of the store not to be cut

@kould, in our next update, we will display the full banner if the vendor shop page.

We will keep you posted.

@kould, Override the vendor_lists.php template file and replace line number 145 with this code to display full banner :

<div class="wcmp-cover-picture" style="min-height: 100px; height: auto;">
   <img src="<?php if($banner) echo $banner; ?>" alt="">
</div>

To check how to override this template please look into – https://github.com/dualcube/dc-woocommerce-multi-vendor/blob/master/templates/shortcode/vendor_lists.php