Yes, there is the possibility to file complaints anonymously. In case you chose to complain anonymously, please, make sure that the information provided is as complete as possible, as the Monitoring Body cannot come back for clarifications or additional information in the event of an anonymous complaint.
For the avoidance of doubt: to file a complaint anonymously means without providing contact information or a name. Notwithstanding and in accordance with applicable law, the Monitoring Body may be required to cooperate with third parties e.g. subject to court orders. Please note, that there is always a risk that based on accumulated information you may still be identified by other means than name or contact details.