[Resolved] WPML & WooCommerce FedEx Shipping Incompatibility

I have fixed the issue for your developers. The problem is within:
woocommerce-multilingual/inc/class-wcml-cart.php in "public function convert_cart_shipping_to_currency" on line 649. Here is the complete function BEFORE resolution:

public function convert_cart_shipping_to_currency( $currency ) {
$shipping_amount_in_default_currency = $this->woocommerce_wpml->multi_currency->prices->unconvert_price_amount( WC()->cart->get_shipping_total() );

return $this->woocommerce_wpml->multi_currency->prices->convert_price_amount( $shipping_amount_in_default_currency, $currency );
}

Here is the NEW WORKING code:

public function convert_cart_shipping_to_currency( $currency ) {

// Check if 'wp_loaded' has already fired.
if ( did_action( 'wp_loaded' ) ) {
// 'wp_loaded' has already happened, so we can safely process the cart.
return $this->get_converted_shipping_amount( $currency );
} else {
// Defer the processing until after 'wp_loaded'.
add_action( 'wp_loaded', function() use ( $currency ) {
return $this->get_converted_shipping_amount( $currency );
} );
}
}

private function get_converted_shipping_amount( $currency ) {
$shipping_amount_in_default_currency = $this->woocommerce_wpml->multi_currency->prices->unconvert_price_amount( WC()->cart->get_shipping_total() );
return $this->woocommerce_wpml->multi_currency->prices->convert_price_amount( $shipping_amount_in_default_currency, $currency );
}

You can shout me out in the next update, thx