I discovered that someone was impersonating me as TheLightningCrab at www.seaart.ai.
They have re-posted most of my models and even my images.
While I appreciate the flattery, I was concerned about ownership of this name and that account, since they haven't generated anything original. I eventually joined the seaart.ai Discord channel, and to my surprise, they have a process for assuming ownership of an account.
So now I'm the official owner of TheLightningCrab at www.seaart.ai. Just letting everyone know, for what it's worth to anyone. Props to the SeaArt.ai admins.