What size did you set the ThingMark width to in Studio? How wide is the ThingMark you printed? Those must be exactly the same size. The width of the printed ThingMark is measured horizontally from the outside of the left vertical black stripe to the outside of the right vertical black stripe. Take that measurement and convert to meters, this is the value you need to enter in the ThingMark width property (in studio, the ThingMark width property is in meters) .
Also, wherever you placed the ThingMark in Studio, the printed ThingMark needs to be in the exact same location in the real world. This can be difficult to do and takes some trial and error to get aligned correctly. Once those two things are done, the hologram will be aligned correctly.