Hi, thank you for your reply
1. I did not use any other image optimization plugin since Smush claimed can compress & resize to fulfill all what I needed. I am confident there is no conflict with the plugin.
2. I tried several images, all images are still in full size & with little 0.6 ~2% compressed [ https://drive.google.com/file/d/11GwQZYt6GzsxQy9YZOzqvYEI5LyYO9rg/view?usp=sharing ]
hope to get further advises & assist on this
