The land use land land cover maps and Landsat mosaics can be downloaded through the following link: https://ecuador.mapbiomas.org/descargas/

In this link you will find a tool in Google Earth Engine that allows the download of the complete collection, as well as the download by specific territorial or temporal slices. 
If you have any doubts, follow the steps that are explained in this tutorial: https://youtu.be/pFDohJcYFy4

Don't forget to download the legend codes at: https://ecuador.mapbiomas.org/en/codigos-de-la-leyenda/