Imaam performs 2 rakaat of witr followed by a single rakaat

Q: The mosque I am going the imaam makes the witr as 2 rakaat followed by 1 rakaat in which he makes qunut after the ruku whereby everbody raise hands as in duaa and says everytime amin to the duaa.

If a Hanafi follows this imaam is his witr also valid? Secondly they start the tarawih rightaway after the fard of isha thus they dont perform first 2 rakaat sunnah. When should I pray this?

Dua after Salaah

Q: It is mentioned that a person's dua will be answered if he makes duaa after the fardh salaah. Does this mean that he should make dua after the fardh of the salaah or after the entire salaah is completed?