Sitter using fake name?

A little backstory: in 2023 I hired a pet sitter from Rover for the first time. All seemed to be fine while I was gone and she kept me updated with photos of the dogs. Once arriving home I realized she had stolen some of my plants by slicing them in half and saw her on camera taking them to her car. Truly bizarre. I also found some things broken that she blamed on the dogs. I contacted Rover with the proof of her stealing and they had her account deleted

Fast forward to today, I was looking at potential house sitters as I have a trip coming up. And who do I see? The same pet sitter I used before but under a different name. She’s also using photos of my dogs. One of my dogs has recently passed, so this was extra distressing to stumble upon. I got Rover involved and am hoping she is banned but my question now is: if they do background checks, how is it possible the same person can be a sitter under a fake name? And has anyone had something similar happen? It just makes me angry for one, but also leery of hiring off of Rover again

EDIT: UPDATE I never heard back from Rover but when I tried to check her account it was gone! So thankfully it looks like they resolved it. Thanks all for the help and insight!