Background remove problems

I want to remove the background from an image and then use Da Big Gimpin plugin to create and export a file and then import it into Lightburn. It would appear that after following all the steps to do this and despite several attempts parts of the background remain when I import the file. I’m using Gimp 2:10:22 I’m using Lightburn 0.9.18

LightBurn only displays what it is given, so to me it is an issue with the processing you are doing with the plugin. I would ask the creator of the plugin on their FB page for advice.