You haven’t mentioned which version of LightBurn you’re using, or which image format - both of these would be helpful. Older versions of the software didn’t properly read the EXIF tags in JPG files that store this info, but it should be properly read in newer versions, and has always worked properly in PNG files.
Have you tried opening the image in any software other than Corel? Are you sure that the problem is LightBurn and not Corel? (not saying it isn’t, but it’s good to check)
Ok so ilustrator exported it in some dimencions. If i import it in corel i have same dimencions like i set in ilustrator but when i import it to LB dimencions are different.
Zip and email the JPG and PNG images, along with the dimensions they are supposed to be, to developer at lightburnsoftware dot com and I’ll have a look.