I’m super-confused their tax advisor has missed that. I’m running a non-profit that runs events and our tickets include VAT, and our advisor was very clear that all goods we provide must be taxed at the place of service.
So, this has nothing to do with being “partially a company”, but engaging in normal business (which you are free to do, even as a non-profit).
Nevertheless, you are at whim of you advisors, so please help them sorting that out :).
Kudos to the Krita foundation for allowing to donate via bank transfer.