I need to start selling out of stock products - therefore I need to warn my customers that they are in fact buying an out of stock product and for that reason delivery will be delayed. I found several apps that will do that, but I tested a few and none of them seem to work with my smart filtering app (I'm currently using Smart Product Filter by Globo). What happens is that the warnings I set up won't show on the collection pages, only on the product page. But the smart filtering apps allow the customer to buy directly from the collection pages, so no warning there - and also no warning on the cart page either! So for the client it's just a regular purchase and it will generate a lot of frustration when they find out that their order will take several days to be delivered. So, I thought maybe someone else might have had this problem, and maybe they could help me! I really don't want to deactivate the filtering app, it's very useful, but I also really need to make these sells. Thanks in advance!