I have problems to login tu Huobi  

I have problems to connect to https://www.huobi.com/market/cny_btc# from home.
Since 2016-2-18
I can only see "Secure Connection Failed" in all browsers in every PC at home

I tried to update java and Flash and all possible things

then I tried browser settings eg
https://support.mozilla.org/cs/questions/1084406
https://support.mozilla.org/cs/questions/1028755

then I tried to Disable HTTPS Scanning.
http://www.ghacks.net/2014/10/31/avasts-https-scanning-interferes-with-firefox-and-other-programs/

then I turned off the whole Antivirus

I tried to restart computers and VDSL modem, and requested check internet connection of my provider but I can only see Secure Connection Failed

nothing helped.

When I tried ping in command window I can get to 203.90.247.102 http://203.90.247.102.ipaddress.com/#ipinfo but on      205.147.88.105 Ii request timed out
which IP address is https://www.huobi.com/ ?  

tried everything and nothing helped. I also tried to google this problem but it seems nobody had it already?? Dont belive
But except this huge problem when It was possible to login in the past, I couldnot make orders because of error messages. I must manually press buy or sell button 20 or more times and only after than something happened. Would expect that google shows plenty of unsatisfied people but nobody is complaining?