If you've forgotten your password, Ankama offers two ways to get a temporary password:
You must be able to provide the answer to your secret question and have access to the inbox of the email address associated with this account.
Then head to the password recovery by email page.
An email containing a new, temporary password will be sent to you.
You must be able to provide the answer to your secret question and have access to the mobile phone associated with this account.
Then head to the password recovery by SMS page.
This service is only usable from metropolitan France and only for accounts who have certified a mobile telephone number. The cost of sending an SMS is €0.50 plus eventual operator surcharges.
Once you've gotten your temporary password, go to your account management to change it.
If you are unable to successfully change your password, you can contact Support.