Unfortunately, due to Facebook recent policy changes, the ability for apps to post on behalf of users is no longer permitted by Facebook. Due to this change, we have made the appropriate changes on our end to be in full compliance with their changes. Which means, the ability to schedule automatic postings to Facebook is no longer available.
Although we have removed Facebook from Scheduled Messages, users still have the ability to post and share messages using Facebook by clicking on Send Messages, Thanking Donors, and Sharing their personal page. We have also added other social channel options for Scheduled Messages, such as Twitter and LinkedIn.