dear i think it's a common problem.coz i hav also failed to submit mine.

One cannot do two days work on one day, so maybe that was the problem. The system does not allow you to submit a day work after you had already submitted a work earlier. Hope it works better for your understanding. Peace In Peace OUt

I noticed that each new day starts at about 11 a.m. of my time zone (Ukraine). Therefore, if I want to submit the entry at 9 a.m., it's still the present day :) So, I have already adjusted to this fact, and just wait.