Problem uploading with Filezilla

I set up filezilla , it was working fine till few days ago , it actually work perfect when I upload on shutterstock , but when I upload file to Pond 5 once they get to 100% upload the same file start again from the beginning and it never show up in my pond 5 contents page .

Can't really figure this out , I try to delete pond5 from filezilla and then setting up again but it didn't worked out .

Any suggestion ?

Try to use another ftp software. I have the same problem of reloading after finished upload, but all the files show up. I solved using another software.

Which one ? I'm using now Cyberduck . Now files show up in pond 5 but Cyberduck keep uploading those files over and over ...

Sorry, I'm on Ubuntu, not on Mac, so I don't know the alternatives to Filezilla or Cyberduck. Maybe a Mac-user out there can help? The software I use is only for Linux.