> What should I do?
Stop trying. They don't want you, and it's unlikely to change by registering again and again.
A couple years ago my sole 13-year-old account was suddenly plunged into "everything you ever wrote is gone" limbo one morning.
My appeal was granted (!) but they didn't actually fix anything, and now I can't use the appeals page because it falsely claims my account is normal and in good standing. Infuriating.