We have released a new version of GoodData extractor. It runs fully in our Docker infrastructure and so uses its whole potential. It is no longer dependent on GoodData Writer and calls GoodData API directly. It can either take credentials from a chosen writer or you can specify your own. Then you specify uri of reports you want to download as in the old version.
The old extractor is now deprecated and will be switched off by the end of January. A migration wizard which will help you with transition will appear in the old extractor ui later today.