When this has happened, you will have received an email notification from us. The most obvious reason would be that there is no valid bank account number linked to your Mollie account. It could be, for instance, that the current account was closed, as a result of which it is no longer possible to receive payments.
Via the settings on your Dashboard you can fill out the correct business bank account. Next, carry out a verification payment. As soon as the bank account has been linked and approved, we will once again try to pay out the outstanding balance.