Could you please confirm what error message do you receive while importing?
It could be due to incorrect destination location.
Make sure that the destination location is set correctly and has full write access for the images to be copied over.
I get a message about no file found. I ask a friend yesterday to help, but he didn`t find anything wrong, and he has been to a course to learn LR. I also thought I had made some wrong adjustments, but I hadn`t
Are those images already present in the catalog?
Would suggest you to share a screenshot of your complete Import window including Import settings for further assistance.