In build 9032 GS5 a defect has been found when attempting to use SSL encryption on an FTP external account connection. The following error is thrown when attempting to download a file from the SFTP.
12/11/2019 10:19:59 AM CRL-290002 Download error in cURL
12/11/2019 10:19:59 AM URL-140005 Unable to decode URLs of schema ‘ftps’. Not implemented.
The issue is a bug listed under NEO-20498 and has been fixed in GS6 and up.