Not able to submit solution

I am solving a problem Count Steps in Matrix in September contest.
But I am not able to submit solution . Popup appears to complete the registration , but I am not able to enter any field. Any help…?

Try loading page from another browser. This may help! Also if you have an ad bloc extension installed try disabling it.

Hey Anuj, Can you send us an email with your city name to If you are still facing the problem. We will update the info in your profile.

I was facing similar issue. I tried filling the fields 2-3 times and it worked. I was using Firefox at that time. Otherwise try logging out and in again.