Hi guys, I just heard back from the tech and they have fixed the ongoing sync server issues that was causing these posts to go missing. Unfortunately though, the posts that are missing in the threads in this section (Site Issues), can't be recovered at all. Moving forward it shouldn't happen again so please make sure you post here if you see any new threads from this point on that are missing the posts/content.
We are really sorry for any inconvenience. As I mentioned though, this issue should be fixed now moving forward.
CG - Community Support