Thanks for reaching out about this. I can appreciate this would be a difficult situation to be in. That being said, I do have some information for you below.
We have a detailed help center doc which walks through Copyright and Trademark and what to do in those situations. Check it out at this link here.
I’d recommend first having a read through of all of those links on that page, so you are up to speed with things, you can file a report here at this link if you choose. Just to note, this is not legal advice, and you should consult a local legal professional to discuss your situation further, they can advise on specific questions about intellectual property.
Let me know if there is anything else I can help with.