The “Download file” action can’t download folders from FTP servers. But if you have a list of URLs which you want to download, you can use the “Iterate” action and a subproject to do.
Here is a working example: Download several files.zip (3.8 KB)
Note that if you need to download files from several different FTP servers, you can try to specify credential in URLs. But if all the files are located at the same FTP server, it’s better to add credentials to the “Download file” action in the “DownloadFile.morph” subproject.