I understand your perspective, but I respectfully disagree. I have the ability to print family trees in large format (48" wide rolls) color and using a previous program I printed a full 24-generation long family tree in this manner. It was breathtaking.
So while the font is surely too small if printing normal letter/A4 sizes, it is not correct to say there is no use in showing more than 8 generations due to font size. It depends on how big the paper you are printing to is.
Based on that, please do consider the option to limit the number of generations based on what report SIZE the user selects. 8 generations for standard letter size, but true "all generations" for larger selected "paper sizes".
I assume you try the book report in Family Tree builder. since your trees are in Italian, please go to Tools > Languages, and make sure both Display and Data languages are set to Italian. Then try to produce the book report again.
There is a limit of 250 people for a basic site. This is a total for all trees that you have made on your site, or published to your site. If you have reached your quota, you will not be successful in adding to existing trees, or publishing again to your site, until you have upgraded your family site.
If you would like to upgrade please check out this link to the subscription plans available:
What is the quota for a basic account online?
If you are a member of the basic site (a non-paying member), then your total limit of people that you enter is 250 people, and your total limit of storage space is 250 MB. This includes all family trees that you have on the site, whether you made them on the site or in Family Tree Builder and published them to the site afterward. Read More...
While providing not only an option of Christian but catering for denominations and sects within that religion, you make no provision for Pagans whether English Druid, Scottish Druid, Wiccan, Cristo-Pagan, White Witch etc etc.... just Pagan would be nice as we're not a fussy bunch as to which kind, we'd just like to be included,