Just overheard my 15 year old son talking to an eBay operator: “So is it possible to give my new email address to my old account so I can use the alternate email that is there to generate a new account that I can then use to delete the email addresses from the two accounts that I no longer use?” That isn’t quite word for word, but it’s pretty close.
Here’s a tip for young parents. Never let your children buy or sell anything on eBay, and if they do, make sure the email addresses are valid and spelled correctly. And for heaven’s sake, don’t ever let them use PayPal, because that just squares your problem. You’re welcome.