As of June 6th, 2018, the Rebranding feature has been removed.
1. Go to Services and click Add Services
2. Select Rebranded from the right menu
3. Click the Add button from the Rebranded page
4. From the add-ons window, select Facebook Page Loader
5. Select all the Facebook Pages that require you to
6. Scroll down that same page and click Save Settings to complete the bulk reconnection