I am getting Could not connect to server or Critical error [ Filezilla ]

Error :

Response: 530 Login authentication failed
Error: Critical error
Error: Could not connect to server

Solution :

Please recheck your username and password and make sure that you are using valid login details.

You can also change the password using below procedure,

[1] Access your control panel at https://www.yourdomain.com:8443 [ Example :https://www.servername:8443 ]
[2] Click on Domains.
[3] Click on Domain name.
[4] Click on Webhosting settings.
[5] Change the FTP password.
[6] Click on ok.