Help with reconstruction of point cloud to mesh

When trying to create a mesh from a .e57 file, the mesh is turning out like this 


but when changing the mode in scene from sweet to vertices the reconstruction appears like the images below and this is what I am trying to get from the mesh. When trying to export the file to .obj it exports as the first image of the model.

Has anyone had similar issues, or any advice on how to resolve this? I have tried using individual scan files and a singular file but they all have the same outcome.