Hi again,
I’ve just tried to reproduce the error on my test server, but unfortunately didn’t succeed – 0% VAT remains after I’m confirming the order. Maybe I could log in to your site’s admin to check what’s going on? If that is possible – my private email is [email protected]. If sharing an account is not an option – could you please for a start try setting “Preserve VAT in selected countries” option to “Disabled” to be sure that this is connected.