Shopify script (checkout ) eu vat taxes

[batdemberel]

Hello, our company is based in Germany and sells cashmere products all over the world.

We plan to remove the VAT tax in the EU countries and not in other countries.

but made in accordance with this instruction

https://help.shopify.com/en/manual/checkout-settings/script-editor/examples/vat-script

It works when you go to checkout for the first time

When the page changes on the checkout page, the script stops working and VAT taxes are not deducted

please, help me All