BookLibrary Modules Support

Hello,
I have installed booklibrary and wanted to add a book on the start page. then suddenly a blank screen appeared and after that I cannot see any articles in my category lists. It shows only a blank list. But the number of articles can be seen.
I tried uninstalling booklibrary but the article list has still a problem. I just do not know how to fix that.

Also if I switch to german language. It shows only english language texts like "buy now"..

Hello,

Can you give to yours site Admin access for check where error.
You can send it through contact form on this site.

With respect,
Andrew