When you receive an error about incorrect FTP login we recommend changing your FTP password.
If you are a customer, you can do this from your
Direct Amin area FTP Accounts. There you will find the option to change your FTP
If you are using an additionally created FTP account, you should make sure to add @yourdomain.com after the FTP username. For example, your username should be firstname.lastname@example.org if you have created an FTP user with username ftpuser1 and your domain is yourdomain.com.