netcdf files not created with api

Datasets and Usage
1

the cds api is no longer able to download netcdf files ( as of today).

2

Are you sure about that?

I just downloaded NetCDFs just fine

3

yes, the era5 and era5land is returning either empty zip archives or data.grib in the zip files, no netcdf.

4

Check this: Yet again another undocumented and unnotified change in API ( format vs data_format)