Here's how to hide and unhide content within the Archive app. If you no longer want to see posts from Dr. Calvin Brown, select the three dots and then click Hide Content from Dr. Calvin Brown. Archive will no longer pull in content from this creator. If you want to see all of the accounts that you've hidden content from, Go to the top right corner and select the hamburger icon, and then select settings.

From here, navigate to workspace, and down at the bottom you will see hidden social profiles. Here are all of the profiles for which you've hidden content. From here you can choose to unhide for whichever creators you now want to see. I'm going to select unhide for Dr. Kelvin Brown so that I can see his posts again.