@Hummingbird, the issue is that META don’t accept content containing works from the public domain anymore and because of this new policy, they have started to remove any release that might fit this criteria. Most “classical” releases are being taken down for this reason, even if it doesn’t contain public domain works (they don’t seem to be very thorough when it comes to checking the content they take down), that’s why it’s a bit random unfortunately.
If it turns out that the release doesn’t contain public domain content, we can try to re-deliver it to META so hopefully they can check it carefully and re-upload it (that’s what we’re trying in your specific case), but it doesn’t mean that they will necessarily accept it. Again, the platform has the last say when it comes to accepting/rejecting the music and we as a distributor cannot challenging such decisions.