If you want o change the main root FTP account, then you need to change the password of your cPanel account. However, if you want to change the password of a specific FTP account, you should follow these instructions:

1. Log into your cPanel account

2. In the Files section, click on the FTP Accounts icon.

   

3. Under the FTP Accounts list, click on Change Password or use the Password Generator.

   

4. Click on the Change Password button.

Now you can access your FTP user account with your new password.