You've sent the parcel with his belongings, so at this point I really don't think you need to do anything else. Please consider blocking not only him, but all of these other individuals that seem to delight in creating drama.
I'm hopeful that once you don't have to deal with all this f***ery, you can begin to let all of that go and begin to live your life only focusing on you.
If you at any time feel unsafe, as in physically threatened by these people, please document and call the police. Otherwise, you've done nothing wrong and they don't have anything actionable they can hold over your head.