FOX - WooCommerce Currency Switcher Professional

Plugin URL: https://wordpress.org/plugins/sellkit/

In file wp-content\plugins\sellkit\includes\elementor\modules\checkout\classes\global-hooks.php add next code:

if (class_exists('WOOCS')) {
    global $WOOCS;
    if ($WOOCS->is_multiple_allowed) {
        $currrent = $WOOCS->current_currency;
        if ($currrent != $WOOCS->default_currency) {
            $currencies = $WOOCS->get_currencies();
            $rate = $currencies[$currrent]['rate'];
            $price = $price / $rate;
        }
    }
}