I encountered this problem for no reason before. I contacted the US side by email and they said my account was a security risk and was permanently restricted. I couldn’t register a new account with this email address. Later, my paypal was also blocked, so I had to register a new account. eBay is still pretty bad. Except for a few big sellers, most of them are scammers and shameless. When you encounter problems, eBay will ask you to contact US sellers. The US shipping items know that the buyer is located abroad and the language is not convenient, or the shipping fee + tariff return is troublesome, so they are even more unscrupulous!

Be cautious when shopping on eBay. I almost gave up on eBay, except for a few special big sellers!