can not change price even change the currency

i create a order in woocommerce ,but the price is can not change when my customer change the currency , and this order is created by admin, if they driectly use cart on the product page ,the price can be changed ,but all of my business is need i to create order to my customer.
so .i want to know what should i do now .
this is the check out link
https://www.tellyouwhere.com/index.php/checkout/order-pay/16390/?pay_for_order=true&key=wc_order_Dsh90mXHW0nDD