It looks like they disabled local FTP access with MyCloud but you can access the server locally with sftp and the master account sshd, and your master password, using File Zilla or other sFTP clients.

Technical notes, and other ideas.
It looks like they disabled local FTP access with MyCloud but you can access the server locally with sftp and the master account sshd, and your master password, using File Zilla or other sFTP clients.