Facing below issue while trying to import files from local repository to the FTP server.
I think it is a firewall issue, Please verify if you are able to ping/paping the destination FTP via designated port number
Have you tried to increase the time(TransferTimout, TransferIdle) on the FTP server to see if it works?
Would you mind posting your whole work flow screenshots on forum which will be helpful for us to address your issue?
Please mask your sensitive data.