Hello apeech,
Could you please send to us the project data that contains the DEM that we can use to reproduce the issue with the contours generation (to reduce the project data size you can re-save it as a new PSX project and remove dense cloud, mesh and orthomosaic from it, leaving only sparse cloud and DEM).
Hello chesterharry,
We've got the same request to you for the old-version project where we can reproduce the issue with Simplify contours feature.