Just wondering if the download tool used any of these SFTP_Ciphers?
kex_algorithms (2)
diffie-hellman-group14-sha256@ssh.com
diffie-hellman-group-exchange-sha256
server_host_key_algorithms (2)
ssh-rsa
ssh-rsa-sha256@ssh.com
encryption_algorithms (3)
aes128-ctr
aes192-ctr
aes256-ctr
mac_algorithms (2)
hmac-sha2-256
hmac-sha2-512
compression_algorithms (2)
none
zlib