Hummingbird reporting CDN image

I'm running Smush plugin, and Hummingbird plugin tell me to compress an image, I checked the Media Library it is smushed https://cdn.livechat-static.com/api/file/v2/lc/att-old/8801096/7822ead567aabd97ac72d5b39722abfc/Media%20Library%20%E2%80%B9%20Black%20Wrestling%20Network%20%E2%80%94%20WordPress%202018-10-07%2016-21-32.jpg

After re-check I realized the image URL is for the web server's CDN, cleaned CDN cache, and ran a new Hummingbird test, it listed me two new images with Compress issue, can you help me?