how to delete an entire page and all its content from a LibreOffice Writer document

I copied & pasted a drawing from an internet site into a LibreOffice Writer document. It is the only thing on the page. When I click on the picture and then the delete key, the message “writer protected content cannot be changed” appears. If I click on Edit (in the toolbar), “Delete” does not appear as an option.

Can you provide a copy of the file (rename it and remove other pages if it private data)? This way we can see what is going on. Thank you.

Have you seen question 241507?