The Duchess disregarded a pact she signed with the late Queen Elizabeth, which involved not exploiting her HRH for financial purposes.
An accusation against the princess was made after podcast host Jamie King tweeted a photo of a gift basket she got because she used her title.
According to RadarOnline, "the apparent breach of the deal is what left Harry's estranged brother, Prince William, incensed."
And "to say he was upset by Meghan's continued use of HRH would be an understatement," according to a well-placed insider, since "he was livid" truly.
Because of this, he has pledged to "settle the matter for good by stripping them of their titles" if he assumes the king.