Hey annebv,
You'll need to check your Prepare electronic payments window and clear the cheque transactions there by downloading the bank file. Just make sure not to upload the bank file to the bank portal. Once you've done that, you can proceed with the reconciliation again. If your account reconciliation is still out of balance, make sure to reach out to our support team directly. You can reach them on live chat via our virtual assistant MOCA or by submitting a support case via MyAccount.
Best regards,
Doreen