2) Not sure what you mean by "the buttons aren't sensitive.". If you mean that Listing command box is disabled, it likely because you have SFTP protocol enabled and this is SCP option. Note that WinSCP by default falls back to SCP, if SFTP does not work on the server. But if you want to configure SCP options, you need to select SCP protocol explicitly.
3) Note that the
grephack won't help as you still probably have month names in German in the listing.