Alex is streaming Facebook live from his phone using the Apple Camera Kit, but he's now having audio issues. Leo says that it sounds like Facebook has changed something in the streaming, that causes the issue. It may also be that the specs to Alex's camera connection kit are no longer supported by Facebook live. Or, it could even be a change by Apple in iOS. But more likely, Facebook has changed something and Apple simply needs to catch up with an update.
Leo also recommends changing the audio bitrate to 48khz, instead of 44.1 first. See if that fixes the audio issues. Facebook requires 48 kHz. It's broadcast standard.