product link

Hi, some of the product links on the marketplace are resulting in 404 errors - page not found. Looking at the link, I can see that there is a blog link that shouldn't be is like this: I have taken a look at the global database and in the products table the link is correct so I don't know how to solve this.

Also I have some members from Northern Ireland, and in the base country, there is no Northern Ireland, or if you select UK, there is no Belfast or whatever and if you select Ireland, there are no options. What would be the best option for them?