need to refresh page to show images

hello i need some help, after activating this plugin my images in my post wont show at first but after i refresh the page my images will appear. do you know what could be the problem.

This is my site: https://wpspec.com/how-to-create-custom-navigation-menus-in-wordpress/

Thank you

https://www.ads-software.com/plugins/image-lazy-load/