Problem loging to cometID

Hi,

I have a new computer with windows 8 on it
I have installed bitcomet but I have problem login to my CometId.

I have entered my username and password ( which are correct since I used them to log to this Forum) but I can't login and I don't get any error message.it shows "connecting to server " for a few seconds and then it returns to "sign in now"

Could use your help

Shani