Meghan Markle and Prince Harry have managed to move past “Edward and Wallis territory” into “royal Siberia,” which means the senior royals have “severed all contact” with the rebel Sussex duo. Insights like this led veteran royal expert Richard Fitzwilliams to exclusively tell The Royal Observer: “Harry and Meghan only left three plus years ago after a short time in the job, but hopes were so high. Their ratings, terrible in the U.K. are better in the U.S.” “The attacks, Oprah, the Netflix doc, Spare [and] the interviews, have played a significant role in alienating the 18-24-year-old group fr…