Hello @Joost,
Please reupload original file archive-product.php from your theme package to the directory wp-content\themes\idstore\woocommerce.
Then you need edit the file wp-content\themes\idstore\woocommerce\archive-product.php on line 62, you’ll see the code <? if(isset($cat->description) && $cat->description !='' && !is_shop()) {
, just add “php” at the beginning so it will be <?php if(isset($cat->description) && $cat->description !='' && !is_shop()) {
.
After that check your site.
Regards,
Eva Kemp.