Does anyone has an idea of how to get the data ?
They have instructions under the Data Tab - I would read the whole thing carefully. But if you want to start downloading the data, here is a link to instructions on Radiant Earth MLHub. https://github.com/radiantearth/mlhub-tutorials/tree/master/notebooks/2020%20CV4A%20Crop%20Type%20Challenge 'git clone <their repo>'. Before you run Jypyter Notebook that downloads data for you, make sure you install the right tiff library by running 'pip install -r requirements.txt'