Prince Harry is concerned about King Charles and Princess Kate’s health amid the fresh royal storm surrounding the Sussex titles, according to a source. The Duke and Duchess of Sussex have faced some criticism over their major rebrand this week. The couple launched their new website sussex.com on Monday. Meghan Markle and Prince Harry’s children Prince Archie and Princess Lilibet will use Sussex as their surname. Rather than being known as Mountbatten-Windsors, Archie and Lilibet have been known as Archie Sussex and Lilibet Sussex since King Charles’s Coronation in May 2023. Harry and Meghan a…