Involving a party outside the EU. I bet the latter is what really threw your first accountant off: nonprofit + suppliers outside EU. Most accountants never have to deal with something like this in their entire career.
It's not that uncommon; I'm a member of a tiny cultural non-profit association, and we buy stuff (mostly props and other materials) from China regularly.
That said, I do strongly advise finding an accountant that specializes in non-profits. Ours works with a lot of cultural associations, so he knows that law inside out.
