Because this is a Kindle Unlimited eBook, I was able to get a copy. After looking at this, it's clear the author has no idea how to create an eBook. He used some sort of word processor, took that output, and converted it with Calibre and did zero error checking. Amazon is also to blame for not having any sort of error checking to self-published eBooks. Even for free, I would not want to have to clean up the error riddled code.
The author has a Facebook page. I suggest you contact him and let him know that his eBooks are riddled with errors.
https://www.facebook.com/DuaneBoehmAuthor