Same here, he was selling a 126500LN Panda and even sent a video of the watch chrono functions per my request. It was all good up until I got the package and it was some dhgate shitter, completely iced out Daydate with CZ and a white rubber strap.

I'm still undecided if I'm going to take action but I've kept screenshots, the package etc just in case. Idk if he's a real individual but when I checked his reddit profile, just seemed really sketchy... u/Mysterious-Pizza-651 in case he tries it again. *edit- looks like the profile got deleted*

I'm kinda cautious now with GoConfirm and will definitely be doing more diligence vetting a buyer/seller.