How to set up global shipping rates on Printful?

Hi, last week I had it confirmed that as I wanted to set FREE shipping to the UK (where I live) I had to set a new rate in ‘Custom Shipping Rates’ which I’ve done and all seems great for the UK. I drop ship via Printful and so deleted the GB rate from the App Shipping Profiles, and left the rest of the world as it is, as it was fine as it was.

However, it now appears that at checkout nobody from outside of the UK can carry on to the shipping page.

Do I have to create new shipping rates in ‘Custom Shipping Rates’ for all the other countries in the world I want to sell to?

Maynard