Image Targets having issues

hi guys! im having trouble with a project that used to work perfect and i havent done any changes. its an ar project with an image target and a video that displays over the target. even though the video i correctly placed now its displaying in the wrong place, like a lot to the left of the image target. i was just wanting to know if u have done any updates or are making, that could be causing this to happen… ive tryed everything i even started the project from zero and still happening