I was informed of this situation by a friend, and I feel so terrible for the artist that this is happening to. Their name is Lunathyst, and they really need money to help cover some medical bills. They're currently offering characters in return for money, but you can also donate to them here! If you want more information or to buy a character, here's the main bulletin.

I haven't interacted with Lunathyst much, but they seem like a very lovely person, and I hope that they're able to get the help they need.