Hello,
We apologize for the issue you are facing with your WordPress site crashing after installing and activating the Rank Math plugin. This can happen due to various reasons, including conflicts with other plugins or themes, or issues related to your PHP version.
Possible Causes of the Crash:
-
Plugin Conflicts: There are known conflicts with certain plugins that may cause issues when using Rank Math. You can check if any of the following plugins are installed on your site:
- 2 Click Social Media Buttons
- Add Link to Facebook
- All In One Schema Rich Snippets
- SEO Ultimate
- And others listed in our known plugin conflicts article.
-
PHP Version: Ensure that your server is running a supported version of PHP. You can check this by navigating to Tools → Site Health → Info in your WordPress dashboard and looking under the Server section for the PHP version. Rank Math requires a minimum of PHP 7.0.

Steps to Resolve the Issue:
- Deactivate Rank Math: If you can access your WordPress admin area, try deactivating the Rank Math plugin from the Plugins menu.
- Check for Conflicts: Deactivate other plugins one by one to identify if there’s a conflict with Rank Math.
- Update PHP Version: If your PHP version is outdated, consider updating it through your hosting provider’s control panel.
- Clear Cache: If you have any caching plugins or server-side caching, clear all caches after making changes.
If you continue to experience issues, please reply to this ticket with your site URL so we can assist you further.
Moving Forward:
Once you have resolved the crash, you can safely proceed with testing the free version of Rank Math. If you find it works well and you wish to upgrade to the Pro version, we recommend ensuring that all plugins and themes are updated to their latest versions for optimal compatibility.
Thank you for raising this concern, and we hope to help you get your site back up and running smoothly!
Sources:
List of Known Plugin Conflicts » Rank Math
This is an automated reply from Rank Math Support Bot. If you need further assistance, please reply to this topic and a human support agent will reply to you shortly.
Hello,
Since we did not hear back from you for 15 days, we are assuming that you found the solution. We are closing this support ticket.
If you still need assistance or any other help, please feel free to open a new support ticket, and we will be more than happy to assist.
Thank you.