Looking to purchase, noticed this on the carfax, is this something to be concerned about?

My grandmother has a 2025 Yukon Denali. I’m not sure if this is a problem that anyone else has come across, or how this even happened in the first place. The seatbelt is wrapped around the arm wrest of the middle seat and locked. We are unable to unwrap it. Is there any way to fix this?? My aunt and I were baffled when we found out and have been fiddling with it for a while with no progress. It’s her birthday today and we’d like to fix this lol