data.bsnl.in

I have bsnl broadband connection under West Bengal Telecom Circle (WBTC). I used to check broad usage in data.bsnl.in .I'm using unlimited plan so i didn't check usage for long time. Now when I logged in data.bsnl.in, I cant find my usage. Plz help

I m unable to open data.bsnl.in on my laptop(vista). I tried using all the browsers. While on the same time i m able to open data.bsnl.in on other laptop which is connected to my network. What the problem i cant figure it out