Displaying user related content Im trying to figure out what contextual filters to use but im getting no where, im trying to display content related to that user through an attachment on a page listing all users. So for example if I had user 1 it would display content from user 1 and if the user is user 2 and the attachment would display the content under user 2 and so on.

In the image below, I have the filters and relationships I am using on my attachment. on the page itself I have no contextual filters or relationships on it. I think that is fine since I am displaying just the users themselves, however I could be wrong.

as you can see I have no contextual filters added on to the attachment because I am not sure which one is the correct one, I have tried different combinations with User: Uid and Content: Author Uid but have had no luck.

Any help is appreciated.
You're over-complicating this with the extra relationships.

Drop everything under relationships and make sure your drop your relationship references on your fields as well.

Then just add a contextual filter for Content:Author uid and you should be all set as long as that uid is correctly getting passed to the attachment. You will want to end up with something that looks more like the attached screenshot.