LiDAR Point Cloud Plugin not importing properly

I have a large project with multiple PTS files. I have imported the first 3 fine, and many of the others won’t import, they show a cube in the horizon (screenshot).

I tried editing the point cloud, and it won’t show in the editor.
I tried on another laptop, same issue.
I tried on a new project. Same issue.
I tried re-exporting form the original, Same issue.

It is not related to the size of the file since the biggest sized point cloud was imported fine.

Any thoughts, please?