thomlin, I apologize for not understanding you. You were completely right on the Customer Tax ID being collected by the Stripe Payment provider on the Checkout page. The link you shared was in dutch, so I couldn't understand its content. I've managed to switch the language to english and I read it again. Thank you so much.

No problem, my friend. We are all sitting in the same boat, trying to paddle in the same direction on this torrential river.