I am having the same problem. Has it been addressed? this is my link I copied to put into an email and no one can see the "see all pages" preview which I set.
Customer can't view book to preview or buy
I have made my first book, and want the client to view it, to see if they are happy with it. I copy the link and email it they get an error message. here is my link:-
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Yeah. WHAT GIVES? Same issue, apparently two years later.