The domains themselves resolve but your links in the first post do not
Go to an incognito tab and click one of the links in your first post, they are all popinted to an internal dan link and you will see them because you are logged into dan and are the account owner.
Other logged in dan users will see the error above that I posted and non logged in users will get a dan user login prompt.
Your links show like this: dan.com/users/portfolio/79157161
That cannot possibly resolve for anyone except the owner of the portfolio