If there is only one bank account connected in Vendasta Payments, you wouldn't be able to replace the account unless you add a new bank account.
Go to the Administration tab > Vendasta Payments > click on 'Add Bank Account' under Receiving Payout to add a new account. Once the new account is added, you can then set it as the default, then the 'remove' option will be available to remove the old bank account.
