Leider nein (https://pocketbook.de/de_de/color-moon-silver#characteristics)

I think there are only the three (English, German and something else). But you can also buy ebooks from Orell Fuessli, for example, or from an online library like onleihe.net.

I would be surprised if it doesn't work, it has opened all pdf's so far, no matter if text or pictures!

No, Amazon is cooking its own soup, as usual. You need the Kindle for that

You can use it to access the Internet normally, but I have only downloaded books via the Pocketbook Book Store. But PDFs and other images work without any problems. So it should work.

All traditional languages in any case +Special alphabet.

With the Pocketbook, you can log in to the Pocketbookcloud, and you can get access via a bookseller (except Orellfüssli and Weltbild). The reader has its own email address to which you can send eBooks, and it also has access to Dropbox. It has no connection to the tolino cloud.

With Calibre everything goes on it without problems, unlike certain fall fruit products.

Yes, there is. It adjusts automatically or you set it manually. Readability is very good in bright sunlight to complete darkness.

We have no more information than that displayed on the item page or in the status of your order. Please note that these delivery times are adapted to what the suppliers give us directly.

There are some covers, which are also linked in the accessories section.

It is correct that the PocketBook Pro Color Lux was first on the market (2013), but the market success here was not particularly good. Colour e-book readers work with a combination of a black-and-white and a colour panel. Until now, the colour panel has always been made of glass and, due to its poor reflective behaviour, required active lighting to provide a qualitatively acceptable display at all. The result was a spongy, blurred display that was no pleasure to read. The PocketBook Color didn't come out until 2020 and the new technology Kaleido, which came out in 2019, means this e-reader can do without the extra glass display. This makes e-readers lighter and easier to read due to the higher contrasts. In addition, the display consumes less energy. Accordingly, the colour display on the new e-reader has become very good in terms of quality and is no longer a comparison with the old model.