hello, I was on minecraft java edition last week and I bought java edition on February 7th 2021. i have a email confirmation as well. When I went to play today it said "play demo" and that I have to buy java again. then i signed out of my microsoft account and it wouldn't let me sign back into my account and said i have to wait for a announcement to migrate my account. my username is SnappleWrapple .
Hello! MCL-16570 may describe your issue. Please see the moderator note there for a potential fix to your issue 🙂