USPS labels in ShipipngEasy are still not compatible with Brexit. There is no drop down menu to add our VAT number for shipments going to the UK like there is for FedEx labels. That means that we can not ship to the UK using USPS. Your documentation says that USPS is compatible only with IOSS but IOSS is only for shipments going to the EU which, ever since Brexit, does not include the UK. Therefore you can only ship to the UK with a VAT number. But if SE doesn't have any way to add a VAT number to a USPS label then we can't ship to the UK with USPS. Please fix this asap. This is a basic feature and we should not have to ask for it as a special feature request.
I'm surprised there isn't an option to add a VAT number for UK shipments through USPS --especially considering that it's already been 2 years since Brexit.