Hello Genia, how are you today?
For the pages to be viewed without logging in their profiles have to be set to be view-able publicly, for example on Facebook you would go into Privacy settings and set who you want to allow access for viewing from there
So, I need to log into each of those accounts and change the privacy settings?
That's correct, it's local to each social website
All the main website is doing is linking out to the social media, once it leaves the page its in the other website's hands and that includes respecting the privacy settings they have set at the time for what you can see and nor