Well my answer IS somewhat related to your question. You can make of my post what you will. For example one could configure FileZilla to use the My Cloud as a local directory then FTP to the remote FTP server and transfer files.
Or one could use the Monsta FTP instance if one is running their destination server as a VM and one has terminal GUI access to it in order to use a web browser on the remote VM to access the Monsta FTP program installed on the My Cloud.
Not sure the following service would work but it appears to be a potential option.
Or if you haven’t done so already, contact the GoodSync folks (https://www.goodsync.com/support) to see if they can troubleshoot the installation of their program on your My Cloud.
GoodSync has their own installer for the My Cloud if you haven’t tired using it already. One may have to try using their “Installation on old NAses, before 2014” installation method for the single bay/single drive My Cloud units.
