No worries, technical issues are happening at times.
If you are logged in at discussion you might actually still be logged in at Viki, but the system might show it differently. Try it again in half an hour, but don't worry too much, if it happens to stay this way for a few hours. I know, sometimes it's hard to bear, but it's not infinite. It will pass.
Re-load the page first and then try log in, if it doesn't show you are logged in.