Box Blocker Bob

Couriers refuse PO boxes, and in Canada most also refuse rural routes, general delivery and postal outlets. Shoppers type them anyway, in every spelling. Bob checks every address field for these forms in English and French, plus US military mail, and can require a street number. Then the quiet list: block an address, name, email, phone or customer, and they see only a plain "unable to accept this order". Areas and minimum orders by region too. Runs inside Shopify checkout, express checkouts incl