In some cases GTL or GIS Software are not able to read the correct projection, se we need to set the 'Projection Mode' to 'Custom EPSG' and set the EPSG code of the DEM file.

In this example file, the tiff file contains all metadata except the EPSG, the projection of that file must be in 'Lambert 93- RFG93' EPSG = 2154 (Download File)