I have the latest operating system on my iPhone and now the Book Crawler app won’t let me add any new books. I have a purchased subscription for the app and I keep pressing restore purchases but still won’t let me add any books.
It seems like there might be an issue with the BookCrawler app on your iPhone. Have you tried contacting the app's support team or developer for assistance? They should be able to help you troubleshoot the problem and provide a solution.