The shipping courier you pick actually does not affect the first payment. It's a pre-advise option for us to prepare the packing material for your package.
You can always change your parcel shipping provider before the SECOND PAYMENT.
If cannot choose the shipping method you want, please change the browser (or try with mobile) to try again, if still not work, just randomly choose one shipping method, after first payment made and order created, contact us to change for you.
Or change the shipping way when paying the shipping fee.
