Trane Technologies Software Engineer interview questions

First round - aptitude test Minimum score was 60% to qualify the round. Second round - technical interview Introduce yourself. Write a program for factorial of a number. Family background Normal questions about project. The round was around 20-25 min. It gives me positive feeling and environment was good. Final round - Hr interview

There were 3 rounds,1 technical,1tech managerial and HR round. Basic coding questions asked. I cleared all the rounds, sent the required documents to release offer letter also they shared the compensation letter.I replied to this compensation letter.Post that I received a mail from the HR by mentioning the offer is kept on hold. I tried to connect with HR to know the reason via mail and phone.But the HR is not picking up the call and doesn't reply to the mail.