Forum Functionality Broken / Unable to see Replies in Topics

Hello,The forum functionality no longer seems to be working correctly on our client's site. When you visit any topics, all of the existing replies have vanished and are no longer able to be viewed on the front end.Furthermore, there is no UI to reply to the post either. All that's shown is the initial text from the first post, nothing else.Is there a fix for this? I am running the latest versions of the pro plugin. I've also disabled all other plugins and caching and can confirm the problem persists.Thanks