I found a post on this from google around 2 years ago, and I seem to be getting similar issues and was wondering if others are getting the same.

I will listen to my audible book in my car on android auto, or through the computer app. Though when I go tell the echo dot to start reading its suddenly back 30 minutes that I listened to previously.

Along with that if it does match up when I start listening and I tell alexa to stop playing, when I try to play it on my phone later none of it got registered. This is a HUGE problem and basically makes it impossible to properly listen to a book on "many" devices. Between the computer and the phone it has always worked fine, why does alexa have such issue with it?