Thank you Zohaib. I already had these settings right. Today the notifications on the product page is visible. Maybe it had to do something with cache issues. I alway clear my cache when I work on websites. But strange enough the last two days to message was not visible. From today it is. But thanks anyway for the clarification!
I also enabled the Block option. And you are right, of course. The cart is still accessible, but they cnanot checkout. I do managed to disable the ‘add to cart’ button with a plugin I use which is ‘Mix and Match’ of Woocommerce. So everything is ok now.
Thanks. I appreciate your support.
Best regards,
Dave.