Filezilla issue for video upload

I am trying to upload a 1min video based on guidlines set out. Filezilla is unable to connect to server.

Status:      Connecting to sftp.contributor.adobestock.com...

Status:      Using username "210333617".

Command: Pass: *********

Error:        Connection timed out after 20 seconds of inactivity

Error:        Could not connect to server

Status:      Waiting to retry...

Status:      Connecting to sftp.contributor.adobestock.com...

Response: fzSftp started, protocol_version=11

Command: open "210333617@sftp.contributor.adobestock.com" 22

Command: Trust new Hostkey: Once

Status:      Using username "210333617".

Command: Pass: *********

Error:        Connection timed out after 20 seconds of inactivity

Error:        Could not connect to server

What seems to be the problem? I just could not figure it out

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