Images not loading after plugin activation

Have you converted the existings images? You need to go on Bulk convert -> and click button Bulk convert

After you need to enable “Alter HTML” and choose how to replace the image src

Do I need to bulk convert? I remember using the plugin in the past without having to bulk edit. I though it works just with the extension rewrite in the htaccess. I also want to avoid to deliver webp images to browsers that don’t support them.