Plugin results at https://gtmetrix.com/

Hello, analyzing my site in https://gtmetrix.com I got this message in the result:
Use passive listeners to improve scrolling performance

Consider marking your touch and wheel event listeners as passive to improve your page’s scroll performance.

https://kunstkeramikk.no/wp-content/cache/asset-cleanup/js/head-ee9afc205b708507192b32253063dcbbaa8ae446.js

Eliminate render-blocking resources

Resources are blocking the first paint of your page. Consider delivering critical JS / CSS inline and deferring all non-critical JS / styles. Resources that may be contributing to render-blocking include:

https://kunstkeramikk.no/wp-content/cache/asset-cleanup/css/head-344391c044477029b6732de8daf75a4f9f5fb466.css

Reduce unused JavaScript:
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity

https://kunstkeramikk.no/wp-content/cache/asset-cleanup/js/body-79160f7cb56edf524b6b23fb3411f7c9f6a2b800.js

These same messages are repeated on several pages, I am using the free version of this plugin, but from what you see these messages are related to this plugin

How can i solve this? Thank you so much

The page I need help with: [log in to see the link]