Need Help - Permissions fail

[KWLandry]

Hi Folks, New to this, so likely something simple, but, have worked through getting the extension to connect and I can bring up files to edit.

However, saving the edits and I get "Failed to Save - Permission Denied".

I've messed about with dirMode and mode, nothing seems to change, I've also added sudo su -c /usr/lib/sftp-server to the bash login, as recommended somewhere, nothing has worked so far,

So, a little help please,

Thanks, KWL