<human>: I recently started selling quite a few old text books on a half.ebay.com account that I had not used for about three years. The half account has an old checking account attached to it for direct deposits that I canceled a few years ago. When I tried added my new back account to get paid once I sold all the books it asked me for the full account number for the old account. I have tried calling the bank and looking through all my old paper work, but I am unable to obtain the account number. They list this issue on their site and say to contact them via their messaging system which I did a day ago, still no response. I have been googling this issues and found several forums discussing the same issue, but none that seem to have been able to resolve it or get an answer from half. Any info would be greatly appreciated

Could you distill the essence of the text into 1-3 sentences?
<bot>: Sold books on old half account, account linked to experience bank account, no trace of account number, unable to switch account to get paid without account numbers or half.com intervention.