BERLIN—KFC has apologized for accidentally sending an automated push alert to its app users in Germany that appeared to urge people to order food to commemorate the 84th anniversary of Kristallnacht — the “Night of Broken Glass” — when Nazis terrorized Jews throughout Germany and Austria. The company faced an outcry for the alert that went out Wednesday at a time when Jewish groups are warning of rising antisemitism. According to screenshots shared online, the app alert said, “Memorial Day for the Reich pogrom night. Treat yourself to more tender cheese on your crispy chicken. Now at KFCheese!” KFC Germany...