With a standard PAR contract, if buyer and seller don't come to agreement on the inspection within the contingency period, the buyer must either accept the property as-is or terminate the agreement. If the deadline has passed, you're buying it as is! Do you have your own agent, or is the seller (and owner) on both sides?
Read the contract to be sure you don't have something else going on, but you've probably accepted the property as-is; the original contract stands (with no repairs) unless amended by both parties. You can still terminate the agreement, but are likely to lose your hand money.