Firewall blocking SaaS features, allowlist IPs
It seems a security plugin or the server's firewall prevents WP Rocket from accessing the SaaS features. IPs listed …here in our documentation… should be added to your allowlists:
Version history
Wording unchanged across v3.19.2.1–v3.21.3 (3 builds captured, 2026-06-05 → 2026-06-05). We'll diff it the moment the plugin ships a new wording.More from WP Rocket
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Installation process failed
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Cannot configure itself due to missing writing permissions.
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Cannot configure itself due to missing writing permissions.
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You should either disable Cloudflare APO or check with the theme/plugin requiring the use of “Dynamic Cookies Cache” developers for an alternative way to be page-cache friendly. …More info
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WP Rocket: You are using "Separate cache files for mobile devices". You need to activate "Cache by Device Type" …setting… on Cloudflare APO to serve the right version of the cache. …More info
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Post cache cleared.
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WP Rocket: One or more plugins have been enabled or disabled, clear the cache if they affect the front end of your site.
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Please deactivate the following … option which conflicts with WP Rocket features:
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Enable “Separate Cache Files for Mobile Devices” now
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WP Rocket: We have detected that Autoptimize's JavaScript Aggregation feature is enabled. WP Rocket's Delay JavaScript Execution will not be applied to the file it creates. We suggest disabling …JavaScript Aggregation… to take full advantage of Delay JavaScript Execution.
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WP Rocket: We have detected that Autoptimize's Aggregate Inline CSS feature is enabled. WP Rocket's Load CSS Asynchronously will not work correctly. We suggest disabling …Aggregate Inline CSS… to take full advantage of Load CSS Asynchronously Execution.
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The following plugins are not compatible with this plugin and may cause unexpected results:
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WP Rocket: We detected that the website domain has changed. The configuration files must be regenerated for the page cache and all other optimizations to work as intended. …Learn More
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Enable “Separate Cache Files for Mobile Devices” now
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Could not create the … table in the database which is necessary for the Remove Unused CSS feature to work. Please check our …documentation
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A custom permalink structure is required for the plugin to work properly. …Go to permalinks settings
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For optimal performance, adding the following lines into your .htaccess is recommended (not required):
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Cannot configure itself due to missing writing permissions.
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Cannot configure itself due to missing writing permissions.
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Cannot configure itself due to missing writing permissions.
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Cannot configure itself due to missing writing permissions.
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Is good to go! … Your website is already faster. Visit … Rocket Insights … to check your homepage's performance, add more pages to measure WP Rocket's impact, and keep your site fast.
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The following scheduled events failed to run. This may indicate the CRON system is not running properly, which can prevent some WP Rocket features from working as intended:
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The preload service is now active. After the initial preload it will continue to cache all your pages whenever they are purged. No further action is needed.
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Cannot configure itself due to missing writing permissions.
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Enable “Separate Cache Files for Mobile Devices” now
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Please wait … seconds. The Remove Unused CSS service is processing your pages, the plugin is optimizing LCP and the images above the fold.
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The LCP element has been optimized, and the images above the fold were excluded from lazyload. The Used CSS of your homepage has been processed. WP Rocket will continue to generate Used CSS for up to … URLs per … second(s).
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We couldn't generate the used CSS because you're using a nulled version of WP Rocket. You need an active license to use the Remove Unused CSS feature and further improve your website's performance.
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Enable “Separate Cache Files for Mobile Devices” now
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Your Divi template was updated. Clear the Used CSS if the layout, design or CSS styles were changed.
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Installation process failed
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Cannot configure itself due to missing writing permissions.
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Cannot configure itself due to missing writing permissions.
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You should either disable Cloudflare APO or check with the theme/plugin requiring the use of “Dynamic Cookies Cache” developers for an alternative way to be page-cache friendly. …More info
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WP Rocket: You are using "Separate cache files for mobile devices". You need to activate "Cache by Device Type" …setting… on Cloudflare APO to serve the right version of the cache. …More info
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Post cache cleared.
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The following scheduled events failed to run. This may indicate the CRON system is not running properly, which can prevent some WP Rocket features from working as intended:
every screen
The preload service is now active. After the initial preload it will continue to cache all your pages whenever they are purged. No further action is needed.
every screen
Cannot configure itself due to missing writing permissions.
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Cannot configure itself due to missing writing permissions.
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Cannot configure itself due to missing writing permissions.
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Enable “Separate Cache Files for Mobile Devices” now
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Please wait … seconds. The Remove Unused CSS service is processing your pages, the plugin is optimizing LCP and the images above the fold.
every screen
The LCP element has been optimized, and the images above the fold were excluded from lazyload. The Used CSS of your homepage has been processed. WP Rocket will continue to generate Used CSS for up to … URLs per … second(s).
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We couldn't generate the used CSS because you're using a nulled version of WP Rocket. You need an active license to use the Remove Unused CSS feature and further improve your website's performance.
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It seems a security plugin or the server's firewall prevents WP Rocket from accessing the SaaS features. IPs listed …here in our documentation… should be added to your allowlists:
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Enable “Separate Cache Files for Mobile Devices” now
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) ); # Print notice. echo
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For optimal performance, adding the following lines into your .htaccess is recommended (not required):
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Cannot configure itself due to missing writing permissions.
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Cannot configure itself due to missing writing permissions.
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Cannot configure itself due to missing writing permissions.
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Cannot configure itself due to missing writing permissions.
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Is good to go! …Test your load time…, or visit your …settings
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Post cache cleared.
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Starting from … 3.20, you can track your key pages’ performance directly from your dashboard and get in-depth insights.
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Cannot configure itself due to missing writing permissions.
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The following code should have been written to this file:
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The following code should have been written to this file:
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Please wait … seconds. The Remove Unused CSS service is processing your pages.
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The Used CSS of your homepage has been processed. WP Rocket will continue to generate Used CSS for up to … URLs per … second(s).
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A custom permalink structure is required for the plugin to work properly. …Go to permalinks settings
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Action Scheduler:past-due actions found; something may be wrong. Read documentation »