3D FlipBook - Plugin not working properly error

I paid for the PRO version.

1. Gutenberg Compatibility "The 'Insert 3D FlipBook' button doesn't appear in the Gutenberg editor. Is there a specific block I should use, or do I have to manually paste the shortcode into a 'Shortcode' block, but without the button, I don't have options to choose the flipbook size or open in lightbox?"

2. Using the Shortcode Generator "I can't use the Shortcode Generator. It won't let me enter URLs or text. What's the correct process for generating a shortcode for my PDFs that I've already uploaded to the media library?"

3. Display and Size Options Support Question: "The flipbook is displayed at its default size, and I can't find any options to change it. Are there any parameters I can add to the shortcode to adjust the width, height, or display options (such as initial zoom)?"

4. I'm using the Newspaper theme, Version: 12.7.1