SFTP connection error

Good Morning,

I want to be able to make uploads to my “NextCloud” through SFTP.

When I put the configuration, it gives me an error, and if I look at the logs, they indicate that the login failed, but it is with the user that authenticated me.

OTra thing that I would like to know, is, if I upload something through SFTP, can it be downloaded through the NextCloud website?

Thanks for the help.

Attached screenshots of the SFTP and the errors of the log.