stopped using Amazon when they switched to Bluetooth lockers that can ONLY be opened via their shitty amazon app. Prior to that? was easy and the lockers were great. either enter the code you get emailed or scan the barcode and boom locker opens. NOW you need to have the amazon app which tries to connect to the locker via bluetooth. It's hit or miss. I don't want to use your amazon app, I just want my stuff. The thing doesn't even work most of the time. I remember once I was waiting in line to pick up my package and of the 5 people standing in line with me at the locker 3 of them couldn't get the locker to open. Contact customer service? it's a known issue...