I thought Facebook deleted them. I actually found an archive of Bryer's Facebook on the Wayback Machine (it scrapes the web and archives snapshots of web pages) and I'm pretty sure it was archived on July 24th, which, if so, means they definitely didn't delete it.
If that was the case you would think there would be more social media presence from both of them. Usually killers who are doing it for notoriety, like Elliott Rodger, use social media a lot more. And they could have really played up the "killer duo" aspect with cryptic messages to each other, etc. Instead they had a very small social media presence for teenagers. There's literally only one picture of them together (the butterflies one). Kam's Instagram posts were all from years ago and I don't think any of them were even pictures of him.