It seems you’ve got two issues, right?
- you can’t get the link to your newsletters to work
- on your newsletter template page, you’re always seeing the same newsletter
Issue 1 will be solved by a link block, although @Siton_Systems linked to the link field. From what I’m understanding, you need a link block instead. https://university.webflow.com/article/link-block. You’d add it inside the collection item, drag the elements you want to be clicked into it and then select ‘current newsletter’ as the page to link to.
Issue 2 is caused by you inserting a collection list to the template page. That’s why each newsletter page shows the same content.
Have you seen the collection documentation? This article should be helpful https://university.webflow.com/article/collection-page.
Rather than adding a collection list and limiting the items shown, you can connect elements on the collection page directly to the cms. That’s because it’s the template page. If you do that, each new page will contain the right information.