There seems to be an error on the Geoserver version they are using
https://data.opendevelopmentmekong.net/geoserver/ows?service=wms&version=1.3.0
> This page contains the following errors: error on line 5910 at column
> 17: XML declaration allowed only at the start of the document Below is
> a rendering of the page up to the first error.
However the links in the catalog are listed
https://data.opendevelopmentmekong.net/dataset/forest-cover-in-cambodia-2015-2017?type=dataset
do not have the forest cover for 2009
They do for 2015
https://data.opendevelopmentmekong.net/geoserver/ODCambodia/Cambodia_forest_cover_2015/wms?service=WMS&request=GetCapabilities&layers=ODCambodia%3ACambodia_forest_cover_2015
and that will load in QGIS
when dpi mode is changed in to Geoserver.
