Help with the 'WooCommerce Attribute Swatches by Iconic' Plugin

We have a client site that is using the 'WooCommerce Attribute Swatches by Iconic' plugin and it is causing issues with the total price that woocommerce displays. Please visit this product page for an example: https://www.beds4udirect.co.uk/shop/sweet-dreams-quinn-ortho-pocket-mattress/ You will see whenever a variation / attribute swatch is selected, the total price updates then switches back. We need a global fix for this concerning all variations. We cannot provide WP admin access for security reasons, I will test any scripts you send and once fixed, a bonus will be added to the job. Thanks.