This is really strange , last time i called them and said i want to use sify in linux , they said it would be done in few hours and after that supersify started working fine for me and its still working . I use supersify in linux under wine . Have u tried logging in with supersify ? Try supersify -u username -p password -o o for onion and not zero . If you are able to login in windows then u will be definitely able to login from linux using supersify with wine .Sify sucks anyways .Edit: My next post would be 1000th