Installing & Enabling The LSCache Plugin For WordPress

There are two ways to use LSCWP:

Without a LiteSpeed server, and with limited functionality (optimization features only, no cache)
With a LiteSpeed Web Server + LSCache license, and with full functionality (optimization and cache features)
If you are not currently running a LiteSpeed Web Server with LSCache enabled, but you would like to use the caching features of the WordPress plugin, please contact your hosting provider. Ask them to switch you to LiteSpeed Web Server!...

Read more here: litespeed_wiki:cache:lscwp:installation [LiteSpeed Wiki].