Logged users not seeing any cache

please check in Cache -> Cache -> Cache login user , set it to ON

you have some excluded URI , please make sure you were not visiting at those pages

then please enable debug log , the log should say why it doesn’t cache.

yeah , that’s the case, something tells the plugin don’t cache the page and plugin obeyed it

add_filter( 'litespeed_const_DONOTCACHEPAGE', '__return_false' );

you can add this to your theme’s functions.php to override this obedience