Automatic crossposting for livestreams on Facebook no longer works, but you can still crosspost your live stream on Facebook! It can either be a scheduled stream or currently live.
1. From StreamYard, click the 3 dots next to your upcoming broadcast (or click the Facebook logo in the top right, if in the studio), and click "View on Facebook."
2. Click on the stream itself to "maximize" it (if it's currently live), then click the 3 dots in the top right, and click "Edit Video".
3. On the left, click "Crosspost to more pages", select the page(s) you want to crosspost it to, and click "Save". Your stream should now be crossposted on Facebook!
For more information on Facebook Crossposting, click here.