Hi there, it's been a long time since I posted this. The user interface has changed quite a bit. Head to Settings > Shipping And Delivery > Click Manage Rates on the first white box, scroll down to shipping from ... then add a rate to your desired country as well as the rest of the world. I hope this helps! All the best to your business too
Thank you for getting in touch! I see that @chong has provided some instructions in the post above, which look correct to me. I'd recommend trying what they have recommended but please let me know if you're still having issues.
Victor | Shopify Social Care