Question about PocketBook InkPad Color 3

Yes and no, out of the gate the answer is no, but you can download epubor ultimate and buy a 1 year license for 29.99 USD or a lifetime license for 59.99 USD, i bought a license and remove the DRM and transferred my entire library from Amazon Kindle, Kobo, ADE and other companies, i transferred 95 Books this way across several different shops

From all platforms that offer epub. In other words Orell Füssli, Ex Libris Weltbild etc. Amazon has its own proprietary format that can only be used on Amazon's own Kindle devices or on smartphones, tablets etc. with the Kindle app. It can only be used with the Kindle app.