rent assistance is on a sliding scale the same as all other ftb payments. if income (or your own choice) put you at the basic rate for part A, rent assistance won't be payable. so if you opted, for safety sake to prevent overpayment, to only get ftb A at base rate until end of year, any rent assistance will also be held over for that same period)

have you provided your rental agreement to the office (lease or tenancy agreement or a rent certificate?). rent assistance can only be paid on rental amounts that have been confirmed with the office through them seeing proof...