Id used Audible for years, but cant get it to download books well on my IPhone 7. My library free site worked much better. I tried Audiobooks.com, and it too was much easier to download books with. I live in an area with sketchy cellular coverage, so when I am starting in my car, audiobooks will sometimes stutter as it seeks a connection to keep me up to date; it is a little annoying, but I am able to bypass this search normally; on Audible I sometimes couldnt listen in the car because the app refused to work without some sort of Wifi or cellular connection.
barefootW about Audiobooks.com: Get audiobooks, v5.10