On or after August 1, 2009, it is unlawful for any person, whether or not located in this state, to operate as a debt settlement services provider or provide debt settlement services including, but not limited to, offering, advertising, or executing or causing to be executed any debt settlement services or debt settlement services agreement, except as authorized by law, without first becoming registered as provided in this chapter. Debt settlement services providers may continue to provide debt settlement services without complying with this chapter to those debtors who entered into a contract to participate in a debt settlement services plan prior to August 1, 2009, but may not enter into a debt settlement services agreement with a debtor on or after August 1, 2009, without complying with this chapter.