I've renewed our subscription with Rebex and updated our FTP component to the latest version available.
You can see what's new here:
As far as the "not enough data" error, that appears to be coming from the FTP server when attempting to download data. If the update doesn't fix the issue, you may want to try setting Ftp_NoAbort to true in advanced settings.
In C:\ProgramData\StableBit CloudDrive\Service\Settings.json :