Are the expiations that I paid from money that has a trace of unlawfulness accepted, knowing that my father is responsible for my expenses and I have a grant from the state?

Your liability for the expiation has been discharged, and we pray to Allah that He accepts it from you, for you paid it from a lawful loan, not from unlawful money or money that is dubious. It is best to avoid money that is dubious if you are not in need of it, due to the Prophet’s (peace be upon him) saying: "Whoever guards himself against doubtful things, he has indeed guarded his religion and his honor. And whoever falls into doubtful things, he falls into the unlawful." However, if you are in need of it, there is no harm in taking it and benefiting from it, and its sin is upon its owner.