If you've just made changes to a Resource Board Post that is published to users, and users are unable to see the changes you made, it's possible the changes were not applied. 

As a Platform Manager:
  1. Navigate to Core.
  2. Select Content > Resource Boards.
  3. Select the Resource Board you are working with from the drop down in the upper right.
  4. Click on your post to edit.
  5. Click the "Apply Changes" button on the bottom of the screen.

Once the changes have been applied, users should see the updates to the post.