First, I found the problem with the link to detail page. You actually have to create a detail page. Duh! My fault. I created a result, insert, and upate page, but no detail page.
Second, the validation. I still can't get it to work. I included a screenshot of the Form Validation and Field Settings where you select the Validate unique column option. Even with this selected, I can enter for example "Home" in multiple records and it does not throw up an error as I expected it to. The second attachment shows the results.