I think there's something wrong on the server, since I try to sign in into mission control application but it sends me back to the login page.

browser: Firefox 43.0.1

java and other exstentions are updated to last version...

Do not know what to do.

I have the same problem.

Works fine for me in Chrome. Have you tried another browser to rule that out?

I had this problem, and it was just because I still had to validate my account. Try resending the validation email

Same problem for me, validated my email, tried multiple different browsers and still getting the login loop!

Anything else i can try???

I'm having the same issue. I've tried on both Windows and OSX, Using Chrome, Internet Explorer, and Safari. I enter my login credentials and It puts me right back to the login screen.

Still having problems. Wonder if they just gave up on it

Hi... I have the same problem. loop back to login

same issue here after trying many browsers