First of all! I wonder if they even hire candidate or it is just a fake advertising. Even if one is selected for the first round they ask you to give answers to their task in few days... I think it's from them to get new ideas or idk what.... It's been a pathetic experience almost 3 times, ofcourse there must be strong candidate no doubt but how can someone reject on this reason when there's nobody for the same position for 5-6 months...that's strange