At the moment we do not support SFTP for uploading files through FTP.
FTPS works through SSL/TLS.
See this example from Filezilla.
Copyright Loopia AB 1999 - 2022
Loopia AB, Kopparbergsvägen 8, 722 13 Västerås
Org.nr: 556633-9304
Loopia’s services run on renewable energy