The forum is all jumbled up at the moment. IT are supposed to be fixing it but I think it's more complicated than they hoped. 🙂 The empty threads may be the tester ones? I can't see what photo you're referring to, but if it's the threads asking for tester volunteers then they'll be old and the posts deleted/hidden/locked.
Hopefully it'll be fixed soon, but I wouldn't expect any movement over the weekend.