"Connection Objects" are all of the things that are in your Facebook ad account that you want to promote, like Pages, Mobile Apps, Events and so on.
If you click "Connections" under "Assets" in the main menu, it will look like this:
This page, as you can see, is only for viewing purposes since there aren’t any actions that can be undertaken from here.
You need to choose the right ad account and connection type to be able to see the page, event, application, domain or Instagram Account.
Important note: If you cannot see any of your connections (i.e., Pages) here, then go back to "Account" section under "Assets" menu and try to refresh your ad account. This will re-sync your Facebook ad account with Adphorus.