I never did. I know the PROTOCOL of titles. MANY times, I have written at Answers, that a woman assumes titles and styles of her husband. Following this rule, since Harry is a Prince, Duke, Earl, and Baron, Meghan assumes the status of Princess, Duchess, Countess, and Baroness. Since Meghan only assumes the status of a princess through marriage, she uses the title of Princess with her husband's given name and is Princess Harry, or Princess Henry. It is only a female who is born or bestowed a princess in her own right who may use the title Princess with her own given name.
Meghan , therefore, is HRH, The Duchess of Sussex, Countess of Dumbarton, Baroness Kilkeel, The Princess Harry,or Henry.