Poppulo interview questions

I got an email after a month i appiled. and responded to it after 5 days since i was away from home., then , i got into screening call and passed it , a week later, i was attending the interview, ( before that , i was told it was about fundamentals and conceptual understanding) , where i was thorough in it too. the interview went upto 32 minutes, where there were no gaps, going smooth. in the end , i asked some questions related to the team. , when it is about to complete. The interviewer said, "dont worry, u did good. I will update the further details with the HR for the further rounds." i was confident it went so good since its just the easy round, where we explain about our projects , and experience and conceptual understanding. But even after 6 working days, i didnt get any follow up. I msged HR through linkedin, within 2 min, he replied "unfortunatley no". not even a official mail, no insights, nthg ! that is it ! i dont know what wrong that i even did.