@nil: Do you mean that the SFTP on your router does not work with WinSCP? Then please post WinSCP session log file and a log file of any other SFTP client that works. Or do you mean that the SFTP does not work at all on your router? Then it is not WinSCP question.

SFTP not login in TP-Link Wi-Fi router? How to setup?

Logging tab reveals if you check "Advanced options" below navigation bar of Login dialog.

You may also try SFTP protocol instead of SCP.

Hi – I am sorry but I am a rookie at this and can't figure out how to even access the 'Logging' tab. Recently my internet died and I had to replace the modem (which is connected to a router) and reinstall the ethernet card – since then I have not been able to use WinSCP – SCP is the transfer protocol I use, it's connecting through Port 22. It will let me download stuff from my remote site, but not upload from my local to the remote – it says 'host not answering after 15 seconds' and aborts. Do you know what to do about this?

Thanks