Were you using the cloth band that comes with the headset? My serial number is perfectly intact and I’ve been using this headset for over a year. It looks brand new. The sticker is protected by the stretch cloth band on mine. I have the cheaper version of the arctis pros, it’s got the same hardware and drivers but just doesn’t come with the dac or the LGBT lights.

Although the issue I have with them is the cheap plastic that has broken in the same spot on both pairs of mine. It was really just poor design on their part. But I like them for gaming so I just buy a replacement once a year lol. Their customer service was also really nice to me every time I talked to them. I’m sorry you had a bad experience though, have you tried getting a refund through Amazon?