[Waiting for user feedback] Slow website and large wp_option autoload

It looks like the REST API might be disabled on your site. To check this, we ping the REST endpoint and store the result as a transient. If that transient isn’t being set, the system keeps trying to ping repeatedly. This could be a sign there's an issue with the wp_options table in your database that's preventing transients from being saved correctly.

Can you please try the following:

1. Manually set a transient named `_transient_wp-rest-enabled-ping` with the value `enabled`. You can do this by temporarily adding the following code to your theme’s `functions.php` file or via a plugin like Code Snippets:

   add_action('init', function() {
       set_transient('wp-rest-enabled-ping', 'enabled', 12 * HOUR_IN_SECONDS);
   });

After adding it, visit your site in a browser to trigger the code, then you can safely remove it.

Alternatively, if you're using WP-CLI, run:

 wp transient set wp-rest-enabled-ping enabled 43200

2. Confirm that the transient was successfully set:
- Via database: Check your `wp_options` table and run the following SQL query:

SELECT * FROM wp_options WHERE option_name = '_transient_wp-rest-enabled-ping';

If you see a row with the value `enabled`, it’s confirmed.

- Via plugin: Install a plugin like https://wordpress.org/plugins/transients-manager, search for `wp-rest-enabled-ping`, and check if the value is set to `enabled`.

Let me know about the results!

To confirm, the transient was successfully set?

This code:

SELECT * FROM wp_options WHERE option_name = '_transient_wp-rest-enabled-ping';

returned something?

We've been investigating the 503 errors you reported. At this time, our second-tier team has been unable to reproduce the issue—neither in their local environment nor directly on your site. Even when monitoring the site with debugging tools, no HTTP API calls are being blocked or showing abnormal behavior.

To proceed with more thorough testing and debugging, would it be possible for you to provide us with access to a staging environment where we can safely run extended tests and monitor logs without impacting your live site?