Product does not want to show when I click on it.

[At0m1cB10nd]

Hi team

I have created collections and added all my products on it. All the products shows as "active". 

When I click on the product, it directs to the 404 page - "products not found". 

I cant seem to link the actual product link to the product? I can also not find the area I can do so. There is no apps blocking this. I am also using the custom theme I have copied from a previous store and edited it for my new store. 

All my products are loaded with everything needed, it just doesn't want to open the product online as soon as you click on it to "shop". 

Not even sure if that makes sense...

It shows this:

In stead of this: 

Please help.