(a) If a request for hearing has not been timely received, the court shall confirm and sign a nonagreed child support review order not later than the 30th day after the date the petition for confirmation was delivered to the last party entitled to service.
(b) The Title IV-D agency shall immediately deliver a copy of the confirmed nonagreed review order to each party, together with notice of right to file a motion for a new trial not later than the 30th day after the date the order was confirmed by the court.