Using VirtualEnv: can't connect using Notepad++ or Putty

Dear all

I’ve setup Home Assistant using VirtualEnv now, but not able to reach the configuration files using Notepad ++ (SFTP plugin) or Putty. Probably permission problem, but I can’t solve it.

Notepad++
I’ve set the configuration to use password authentication.
Connection mode: Active (also tested Passive)
Transfers: ASCII (Also tested Binary)

I try to connect using the Home Assistant account created for the VirtualEnv as per instructions on the HASS website.

This is the response received after connecting:
Connecting
[SFTP] Host key accepted
[SFTP] Successfully authenticated
[SFTP] Error initialising sftp: Short sftp packet!
Unable to connect
Disconnected

If I use an account that has full permissions to maintain the server installation to connect, I can connect and reach the HASS configuration files, but don’t have permissions to save changes made.

Putty
Using the Homeassistant account again, no special settings in Putty.

This is the response trying to connect:
Server protocol violation. Unexpected SSH2_MSG_UNIMPLEMENTED packed

In the VirtualEnv for Home Assistant I’ve installed SSH and SSH2

Any suggestions for a solution?

Thanks!

Regards
OWK