Why is "Next" disabled when a visitor tries to place a PO or submit an inquiry on a public product page?

1. Check whether the page displays a notice stating that POs and inquiries from the country are not accepted. In this test, after Germany was added to the list of countries not accepted for orders, the page displayed: "This page currently does not accept POs or inquiries from Germany. If needed, please contact a local distributor or the seller." The "Next" button was also disabled. 2. If you see this notice, contact a local distributor or the seller.