WooCommerce Extra Product Options (by themecomplete)
Plugin link: https://codecanyon.net/item/woocommerce-extra-product-options/7908619
In file wp-content\plugins\woocommerce-tm-extra-product-options\include\classes add next code:
if (class_exists('WOOCS')) { global $WOOCS; if ($WOOCS->is_multiple_allowed AND $price1) { $currrent = $WOOCS->current_currency; if ($currrent != $WOOCS->default_currency) { $currencies = $WOOCS->get_currencies(); $rate = $currencies[$currrent]['rate']; $price1 = $price1 / $rate; } } }