Is it this account you're using to post here? What happens when you click on your username ID / feedback score it should take you to your account.
Or, as you saying you cannot list an item for sale?
It looks like you've returned to selling after a long break check that your registration for eBay's Managed Payments is correct.
See here:
https://www.ebay.co.uk/help/help/selling/getting-paid/introducing-managed-payments-ebay?id=4795
@lucylife
