Downloading SFTP files through Knime Nodes 5.4.3

I’m trying to download files from a secure FTP server. I’m using the “FTP Connection (Legacy)” and “List Remote Files (Legacy)” nodes, and they run correctly. Using the username/password, I access the server folder from which I want to download files and see the list of files stored there OK. However, I’m unable to download any of those files using the nodes available to me, such as “Download/Upload from List (Legacy)”, “Download (Legacy)”, “File Download (Legacy)”, or “File Download Widget”. Does anyone know how to configure those nodes that connect behind “FTP Connection (Legacy)” and “List Remote Files (Legacy)” nodes? Or should I use other nodes for a specific extension that I need to install? Thank you very much in advance for your help.