WooCommerce: the preview no longer uses Shipping dimensions
Shipping dimensions often measure the box, so a product sized by them could show at the wrong size. The size now comes from Print sizes on the seeonwall.com product tab, then from a variation attribute value that names a size, such as 30x40 cm or A4, then from the size field on the product page. The Poster size setting is removed. If a product took its size from Shipping dimensions, give it Print sizes, a size attribute or a size field on the page. This change comes with version 2.0.0 of the plugin.