Welp, it happened to me. Bought a used Steam Deck on eBay and turns out it has been reported stolen, anything I can do?

As mentioned in the title - I bought a used Steam Deck on eBay, contacted Steam Deck support about the touch screen not responding to any touch and was informed that the Steam Deck had been reported stolen. The eBay seller is of course not responding to any messages. I asked Steam if there was any way to get ahold of the rightful owner and they said that's not something they can do. Can I still use this thing with my Steam account? I was so pumped to receive this and now I'm stuck in this position and I really don't want to risk my account getting banned or something.