@Dbaca Thank you Damon! I have installed the app, signed up online and completed the onboarding. I think I now just need to wait for my integration key to finish integrating my shopify webshop platform and the IOSS number itself. I can’t set my shop to charge VAT on EU sales until I have the IOSS number to enter. From your post on another thread you gave instructions on how to add the app and sign up, I think I have followed them ok. It does mention about being billed for three months upfront, is that right?