If the address or place of employment of the obligor changes, the obligor, within 10 days after moving to a new address or receiving the first earnings from a new employer, shall send the change of address or new place of employment to: the court: by certified mail, return receipt requested; or by filing in person at the court and obtaining proof of filing; and if the recipient receives the support payments, the recipient, 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 and employment information, by entering the new address or place of employment 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.