4. An application for conciliation in respect of an account for professional services that has been unpaid or partially paid must be sent to the syndic within the 60-day period referred to in section 3.
An application for conciliation of an account or part of an account that has not been paid may be sent to the syndic after the expiry of the 60-day period referred to in section 3, provided that it is sent before proceedings on the account are served on the client.