Instawork Software Engineer E3 interview questions

there were in total 4 rounds, 3 technical rounds and one director round. First 2 rounds were DSA rounds and the 3rd round was design round and then there was a Director round. DSA Rounds involved 2 Technical Questions and the interviewers were helpful, In design round it was mainly focused on HLD. The director round was the worst, this round had no technicalities, it was just unnecessary round, where the person was not even interested to take the round. After that the company ghosted out and after many attempts I was informed that i was rejected in director round, but they do not have a reason on why I was rejected and they did not provide with the reason, it was really bad experience on getting rejected in director round without any reason provided.