Zikr & Dua

Q: Is recitation of Aaya e kareema in congregation allowed in Islam or is it biddah?

Q: Please can you tell me the full benefits of ayatul karima?

Q: I came across a durood called durood-e-faatih. I would like to know if it is authentic. From which hadeeth?

Q: I know certain time you can't pray salah like as sun rising, sun going down but can you make dua at those times?

Q: I have a question that praying the wazifa Ayat-e-Karima is wrong or right? I have been reading that this wazifa is powerful and helps us in difficulty and gives us relief and I would like to know is it right and could you please give me more details on it?

Q: Is there anything wrong with this du'a?: "Oh Allaah, save us from destroying our aakhirah"?

Q: How should we send our Salaam to Rasulullah (Sallallahu Alayhi Wasallam)? And please let me know of the following:
Is it sunnah to recite surah niba after asar and surah fajar after fajar?

Q: I wanted to know that is salaam i.e. Assalatu wassalamu alaika Ya Rasoolallah allowed or prohibitted?

Q: What dua should I read to conceive my third child?

Q: Can we make dua by taking the wasilah of Hazrat Muhammad (Sallallahu Alayhi Wasallam)?