My take on the promo for what it is worth (we will come to know in a week or so or maybe a year or so..)
Asad comes to know about Abbu truth before marriage.
But Aayaan convinces him not to disclose due to Humeira's condition. Asad agrees.
Asad Zoya marriage happens...
Asad hides Zoya from the truth (blindfold is not Asad leaving Zoya, but protecting her)
Tanveer tries to expose the truth, but is unsuccessful. (Tanveer is not successful)
Humeira does not know and neither does Zoya (they do not meet)
Finally, it is Aayaan who brings the truth in front of Zoya much to the annoyance of Asad (maybe Humeria needs some medical help which only a sibling can provide) (Aayaan does not help Zoya, but asks for help from Zoya)
Whether Zoya will accept/not accept the truth of her Abbu, forgive/ not forgive Asad for hiding the truth is the muqaddar ka khel.
It is not about Zoyaan. This story is not about two brothers. It is about two sisters - Zoya.
That's why even though the name of serial is "Qubool Hai", everyone says "Qubool Nahi Hai". Its all about "not".