From the cdmon control panel you can modify the password of the main FTP user.
To do so, you must access the hosting management of the FTP user you want to modify. Once inside, go to File managers and click on FTP.

You will access the FTP account management. Go to Main FTP account details and then move to the right section and click on Change password:

Finally, the panel will allow you to assign a new password for the main FTP user of this hosting account. You can follow this guide to create a secure password.
Once you have set it, simply click on Save password to apply the changes.

For more information, you can contact us.