I'd be happy to walk you through the process of changing your vendor's bank account, 2jp.

Before you can modify the vendor's bank information, you'll first need to change the vendor's payment method to a paper check so you'll have the option to reconnect the correct account or send another invitation.

Here's how:

1. Click Expenses in the left panel and go to the Vendors tab.
   
2. Find and select a vendor to open it.
3. Check the banner on top and select accordingly:
4. For invitations: Select Manage invite.
5. For manual bank entry: Select Change payment method to check.
6. Confirm action.
7. It'll be asking you to invite the vendor to online bill pay, click the link, and enter new bank info or send a new invite to the vendor.

For more bill pay updates, check this out: Online Bill Pay. This will provide you more links about other bill pay related concerns as well as steps on how to remove and delete bills from online bill pay.

Please keep in touch with me here should you need any further assistance regarding updating the bank account info. The Community and I always have your back.