Page Cache not detected

Hey! I am working on my blog website, the hosting is from SERVER SEA Hosting site and on which I have activated the LITESPEED Cache plugin for website optimization. But my dashboard is constantly showing critical issue which is “page cache not detected” here is the full message

Page cache enhances the speed and performance of your site by saving and serving static pages instead of calling for a page every time a user visits.

Page cache is detected by looking for an active page cache plugin as well as making three requests to the homepage and looking for one or more of the following HTTP client caching response headers:cache-control, expires, age, last-modified, etag, x-cache-enabled, x-cache-disabled, x-srcache-store-status, x-srcache-fetch-status, x-litespeed-cache, x-lsadc-cache, x-qc-cache.

•  Median server response time was 2,205 milliseconds. It should be less than the recommended 600 milliseconds threshold.
•  No client caching response headers were detected.
•  A page cache plugin was not detected.

Learn more about page cache(opens in a new tab)

Why I’m facing this issue when I have litespeed cache plugin activated with all the important settings?

Thankyou.