I had to UPS in my trade-in kit for my iPhone 13 Pro Max to Apple today. I went to the Apple Store at the Mall of NH to trade it in but one of the store rep told me that since I started the process online (ordered pre-release from Apple and have it shipped to my house from CN), they couldn’t take the walk-in trade-in, I would have to use the trade-in kit and send it by UPS back to Apple. Hopefully it gets there ok. I have my receipt and UPS tracking. I also took photos of what i sent.