Sure, here is the English translation of your message:
I purchased 2 iPhone 13 Pro Max phones through OfferUp last year, and they were later marked as stolen. When I bought the phones, I was unaware of this situation as I had returned to my home country where the phones were working fine. However, upon returning to the United States and inserting a SIM card, the phones didn't have a signal. Apple and other phone retailers informed me that the devices were marked as lost or stolen. I have documentation of the payments, messages, and even a photo of the seller. I can share all the details if needed. Please, can you help me with this issue? I'm in a difficult situation as I can't use my phones.
Thank you