Solved
Many characters disapper.
Today, I start PVZ and open my characters. I see many characters become ??? which I already own. It seems to return to a few weeks ago.
My account is [edit: email address removed]. Origin ID is oniyaya.
You had all the characters because it was the Anniversary event, where all non-progression characters were unlocked for all players. This event has now ended and your account has reverted back to what it had before the event started.
Notice "Until Mar 5"
