No limit on words
Whilst there is no restriction on the number of words and pages in an autodotbiography book the requirements of the technology mean that it is not possible to write more than 2000 words in any one text box.
Both autodotbiography's system and web browsers such as Internet Explorer, Firefox, Safari, Chrome etc all have a restriction on the number of characters to be included in any one text box which is a security measure to prevent hacking.
Autodotbiography's sytem is designed to take you through your life story step-by-step producing a flowing narrative. Ideally you will not want to write this many words into just one text box but rather split them up answering the questions laid out for your life story. That way the final book will include all the features designed to produce a beautiful book.
But, if you are tempted to keep writing in one box then you will find when you get close to the limit that a warning will pop up so that you do not lose your precious words.