I am trying to download capture a secure website (https://) where I need to
login first.

I setup the proxy in Firefox according to the IP and Port given in  HTTrack.

However, after trying to login, I do not get the "Link captured" message but
instead an error:
"Firefox is configured to use a proxy server that is refusing connections."

Maybe HTTRack does not support downloading secure websites? If it does, any
suggestion of how to fix the error?
p.s. HTTrack is capturing a link even with the error. If I continue to
download, I get an empty website (& warning message from HTrack)