If the address of a recipient changes, the recipient, within 10 days after moving to the new address, shall send the change of address to: the court: by certified mail, return receipt requested; or by filing in person at the court and obtaining proof of filing; the obligor, at the obligor’s last known address, by first–class mail; and each employer who has been served with a copy of the earnings withholding order, by first–class mail; or if the support enforcement agency receives the support payments, the support enforcement agency: by certified mail, return receipt requested; if the agency’s website allows parents to update address information, by entering the new address on–line; by filing in person at the agency and obtaining proof of filing; or by telephone or electronic communication to the agency and obtaining proof of change. If, because of the failure of a recipient to give notice under this section, an employer or the support enforcement agency is unable for a 2-month period to deliver deductions under the earnings withholding order, the employer or agency: may not make further deductions; shall return each undeliverable payment to the obligor; and shall notify the court.