If you’re following proper stealth setup (fresh device, new IP, clean details) and still got restricted, odds are something in your fingerprint leaked. eBay is tightening detection, especially if you've been previously banned. Even with a new IP, a poor-quality proxy, reused fingerprint or bad timing can link you to an old account. High-quality mobile proxies help here, as they rotate clean IPs from real mobile networks, which are extremely hard to trace or flag, even for fresh stealth attempts. Also consider pairing that with an anti-detect browser to isolate profiles better.