Weird camera behavior with Lightburn

The dot pattern is too small in the image, and I can’t tell for certain, but it looks like it could also be curled slightly. If that is the case, it will not work well - it has to be absolutely flat. You should also completely ignore the image on the right until you have more than one capture (usually around the 3rd one it starts to look right).

Read this - same problem, just 3 days ago, so the advice is the same: Camera calibration query please