using SFTP. using Filezilla Client and it didn't work either.
OK, then your problem is not related to WinSCP.
Contact your server or network administrator. Or ask at a site like https://superuser.com/
Before posting, please read how to report bug or request support effectively.
Bug reports without an attached log file are usually useless.
using SFTP. using Filezilla Client and it didn't work either.