Hi Noha,

Welcome to our DIALux Community! 👋

The cause of the problem is that the three problematic calculation surfaces are very narrow. Therefore, no calculation points can be found on the surfaces there with the automatic measuring grid. If you set the measuring grid to distance and e.g. to 0.5 x 0.5 m and recalculate the project, you will also get results for these surfaces. Please have a look at the screenshot below.

Best regards,

Carmen