no-cache Header Despite Plugin Enabled

Hi everyone,

I’m having trouble getting LiteSpeed Cache to actually cache my WordPress site. Despite enabling all the correct settings, my homepage and other pages consistently return:

cache-control: no-cache, no-store, must-revalidate
x-litespeed-cache-control: no-cache

What I’ve Done So Far:

• My server is LiteSpeed, confirmed via HTTP response headers.
• Installed and activated LiteSpeed Cache plugin.
• Enabled all cache options under LiteSpeed Cache → Cache.
• TTL settings are set to default (1 week).
• Homepage is not excluded in any exclusion fields.
• I verified .htaccess includes the LSCache rules.
• Tested the site using httpstatus.io and RedBot.org in Incognito mode.
• Tried purging cache via LiteSpeed Toolbox.
• Deactivated all plugins except LiteSpeed Cache.
• Checked for DONOTCACHEPAGE in functions.php and plugin files — nothing found.
• Tried using Force Public Cache URIs (/ 3600).
• Maintenance mode is off.
• Theme is TravelTour by GoodLayers.
• Added this custom code to functions.php to override headers:

add_action( 'send_headers', function() {
header_remove('Cache-Control');
header_remove('Pragma');
header_remove('Expires');
header('Cache-Control: public, max-age=3600');
}, 100 );

Question: Still seeing no-cache, and no x-litespeed-cache: hit.

I feel like I’ve exhausted everything. Is there anything I’m missing?

Thanks in advance for any guidance