In the Name of Allah, Most Gracious, Most Merciful.
All praise and thanks are due to Allah, and peace and blessings be upon His Messenger.
In this fatwa:
To make sure your duaa is not rejected, we should make use of these tips:
2- Confess your sins.
3- Ask Allah for repentance.
4- Send blessings upon the Prophet Muhammad (peace be upon him).
Sheikh Suleiman Hani answers your question in the following video:
Almighty Allah knows best.