Prince Harry and Meghan lost their ability to use their HRH titles in 2020 when the couple decided to take a step back from royal duties.
Harry remained a Prince, and the couple kept their Duke and Duchess of Sussex titles, but are no longer addressed as His/Her Royal Highness (HRH).
He also gave up his military titles and no longer wears army uniform in public. However, it now seems that King Charles is paying a high price for the removal of the California-based couple's titles.
