Hi,
I just follow this tutorial with OpenLiteSpeed Learn why people are moving their WordPress setups to CyberPanel - #2 - Blog Posts - CyberPanel Community
I tried on a different VPS OpenVZ and KVM with CentOS 7 since yesterday and yet the x-litespeed-cache header not showing.
Here is my testing site: Website Speed Test | Pingdom Tools
Is there any missing configuration after setup WordPress?
Thanks -