That email could be a phishing scam, an effort to get your account information. Go DIRECTLY to eBay, not using the email link, and you may find everything is ok. Check the email address to see if it actually came from eBay. I have seen fakes like this before. Wifey got one allegedly from PayPal (it wasn’t). She clicked on it and it put malware on her computer. The cursor would move by itself and attempt to access one of her accounts. Had to buy a new PC as a result.
A cautionary tale. I make it a rule never to click on any links in emails unless it is coming from a very trusted source, and I recognize the email address of the sender. Better to go to the web-site yourself in your browser. So many scams these days. And they are getting more sophisticated all the time.