Pocketbook Inkpad color 3 doesn't remember settings

Just got a Inkpad color 3 coming from a Kindle and the software is really not so intuitive.

For example, it seems that the color options I select when reading a comic don't become saved. They change to default when opening another comic and I cannot change the standard default values. Is this true? If that's the case I would need to change the color options every time I open a new comic which is a pain.

Also, there are no "Uncollected "collection that stores the books that are not in a collection, right? This makes organizing books that are not in a collection very troublesome since I cannot tell which ones are not in a collection...