parfoomgirl, try the + trick with gmail instead of relying on an isp email (which now doesn't allow new email addresses, so nothing you can do about it)
for ebay, these are just examples:
parfoomgirl+ebaybicycles @ gmail
parfoomgirl+ebayautomobiles @ gmail
parfoomgirl+ebaybuyeraccount @ gmail
etc., you get the idea. You'll receive the emails in your one main account, and you'll see the sibling (the +part) account's email.
read more:
https://www.thewindowsclub.com/gmail-address-tricks