If you received a message from eBay that your item sold and buyer had paid,  you must send the item asap to the name and address eBay have provided on the order details.

It will not show received in your bank account, as payouts need to be manually withdrawn.

If you have updated your bank details this can take several days for it to be checked and verified, but as a new or returning seller your payout can be held for longer and definitely needs tracking to show the item has been delivered.

@mlwin10