OmTech and LB do not return the same metrics

LightBurn Software Questions
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Laser: OmTech Polar Lite 55W CO2 LB Version: Ruida LightBurn Pro 2.0.03

After successful camera alignment, when I proceed to laser an item, the size of my design(graphic or shape) in LB is not the same as what is being engraved onto my item and the alignment will be off. Of course I go through the steps of locating the item using the camera overlay and setting the focus height. And the actual engraving done is of good quality, just not in the proper spot on the item/material. And to mention, the machine does not have an adjustable bed. I believe the issue is per the LB help documentation(see below), that when you attempt to engrave an item/material of a different thickness than the thickness the camera calibration was done at, you have to recalibrate the camera at the new thickness of the item/material. Not sure this is the issue. Please let me know? But if true, the next problem becomes, to recalibrate for an item/material of a different thickness than initial calibration is just not feasible. For instance, calibrating to engrave on a RFID Blocking Wallet or any other nominal size item is impossible. I have to say, while not being a programmer/coder, I do not understand why the focus height can not be used to mathematically calculate the data needed to adjust for the new item/material height. Help please. As of now I just have an expensive paperweight that can not be used properly. Thanks..

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As you yourself have found out in LB’s documentation, yes you need a camera profile for the different material thicknesses/changed focus distances. In return it works precisely if it is well calibrated and you have a height adjustable machine bed, for all material thicknesses.
What is unfortunate is that you find out about it after you have bought the machine. You also cannot blame others for hiding information about LB’s camera system. There is also no easy fix in store, as you suggest should be possible, in changing the code of the program.
Another problem with your machine is that the actual placement of the camera, the angle and distance to the work surface is “unfortunate” and cannot be compensated for with an easy software fix. The systems that are more advanced typically use multiple camera and alignment tools to control their camera input.
Try looking at the new Xtool P3 80 Watt, and you will understand better what I mean.