True say I not understand what you asked
Yes you need set Amazon settings
admin->components->Book Library->Settings Backend
There find "Amazon Settings" section. Please check attachment:
For that you need do registration for
amazon Product Advertising API
If you configured this but continue see errors:
Could you give to us
full FTP and supper admin access
and our team will find solution special for You, FTP and admin access You can send to our contact form.
Link to website.
Detail description: How reproduce error. Step by step. Detail description: how we may reproduce this.
Site Super Admin:
P.S. Please do site backup 2 times per month this help to you forecast and fix very many errors