Add “noindex” tag for “/?c=” included URL

Hello,

Thank you for contacting Rank Math support, and sorry for any inconvenience that might have been caused due to that.

Please refer to this filter to set that specific page with a URL query parameter to noindex.

add_filter( 'rank_math/frontend/robots', function( $robots ) {
  $url = $_SERVER["HTTP_HOST"] . $_SERVER["REQUEST_URI"];
  if(strpos($url, '?c=')) {
    $robots["index"] = 'noindex';
  }
  return $robots;
});

After this, the canonical tag should also be removed automatically.

Here’s our guide with regards to applying our filter to your website:
https://rankmath.com/kb/wordpress-hooks-actions-filters/

Hope that helps and please do not hesitate to let us know if you need our assistance with anything else.

Hello,

Yes, you can use the “Contains” redirect type for those URLs if you wanted to redirect them.

Here’s a link for more information:
https://rankmath.com/kb/setting-up-redirections/#contains

Hope that helps.

Thank you.

Hello,

Can you please share a screenshot of the redirection you have created so we can check this issue further?

You may use this tool https://imgbb.com/ and share the URL here.

Thank you.

Hello,

The contains redirection rule you have created here should work fine: https://imgbb.com/4K2vHm8

However, our plugin appends the query parameter to the redirected URL and that’s why it seems like the redirection is not working. Please add the following filter to your site to fix the issue: https://rankmath.com/kb/filters-hooks-api-developer/#redirect-remove-query

Here is how to add a filter to your site: https://rankmath.com/kb/wordpress-hooks-actions-filters/

Hope that helps. Let us know if you need any other assistance.

Hello,

We might need to take a closer look at the settings. Please edit the first post on this ticket and include your WordPress & FTP logins in the designated Sensitive Data section.

Please do take a complete backup of your website before sharing the information with us.

It is completely secure and only our support staff has access to that section. If you want, you can use the below plugin to generate a temporary login URL to your website and share that with us instead:

https://wordpress.org/plugins/temporary-login-without-password/

You can use the above plugin in conjunction with the WP Security Audit Log to monitor what changes our staff might make on your website (if any):

https://wordpress.org/plugins/wp-security-audit-log/

Looking forward to helping you.

Thank you.