Deezer is ahead when it comes to paying the artists better than other streaming services, but lacking in so many other ways.
Audiobooks is clearly something people want, but for some reason only seems to be available in German and Austrian. Unusual for a French company!
To get off the mark audiobooks would need is own subsection, and it would be nice if they offered a range of premium authors in English.
Just to add to the long list of things Deezer is lacking:
Apple TV app
Integration in Tesla cars
Dolby Atmos
Yearly subscriptions (discounted rate)
As well as audiobooks
Please integrate and work on these. I have always been a supporter of Deezer but other services already offer the things for the same price. So either drop the price or look at what your competitors offer their customers.