I have been using ATUM Inventory for a while and it's brilliant!
Now I want to purchase the Multi-Inventory add-on, but the checkout on stockmanagementlabs.com says:
Error: The VAT number you have entered has not been validated
If I enter my VAT number and try to validate, it says:
An error occurred validating the VAT number supplied: EU Commission VAT server (VIES) check fails INVALID_INPUT This is likely to be temporary please try again.
Perhaps this is because I have a GB VAT number, and it looks like your website is checking the EU database (which no longer contains GB data)?
I am happy to purchase with or without using my VAT number. Please let me know how.