split screen showing up

-- url of the page with the problem -- : mywebsite.com/mypage
-- HikaShop version -- : bus. 2.2.2
-- Joomla version -- : 3.1-- PHP version -- : 5.3.24
-- Browser(s) name and version -- : Firefox, chrome, I.E

When my customers changes order on front through the hikamarket control panel from confirmed to shipped and then goes to email customer the screen appears like the attached image.