CAMS global reanalysis (EAC4) model levels not working

Hi,

I am downloading the CAMS global reanalysis (EAC4) at 3-hourly data at all 60 model levels. However, the Multi-level grib files with model levels included do not open and show the following error when read using cdo
“cdo setgridtype: Open failed on >download.grib< Unsupported file structure”

This only happens when including model levels and files have error reading.

Please can anyone advise why is this?

Best, Prerita