Hello,
Thank you for contacting Rank Math support and we apologize for the inconvenience.
Please navigate to Rank Math > General Settings > Edit robots.txt and send us a screenshot of that page. Also, please your website URL so we can help take a look.
You can share images with us by uploading them to an image hosting site like Imgur, and then sharing the generated URL with us here.
Thank you for your patience and cooperation
Hello,
We can see that your robots.txt is working fine, can you please share the screenshot of the error you’re getting when you try to edit your robots.txt from this Rank Math > General Settings > Edit robots.txt?
You can share images with us by uploading them to an image hosting site like Imgur, and then sharing the generated URL with us here.
Thank you for your patience and cooperation. Looking forward to hearing back from you.
https://imgur.com/GUhrfRX
this is the link of the photo
and it says ‘robots.txt file is not writeable’in Korean
I opened wp-donfigure.php file but I couldn’t find anything was disbled
Also I’m using the astra pro so I can’t reach the dash borad
Hello,
robots.txt file is not writable
usually shows in the settings when the file edits are disabled through the wp-config.php file.
To enable Rank Math to edit the file, include the DISALLOW_FILE_EDIT constant in your wp-config.php file and set it to false. If this constant is already added, please make sure that it is set to false. If it is not there include it as shown below:
define ('DISALLOW_FILE_EDIT', false);
For more troubleshooting steps, please check our guide here:
https://rankmath.com/kb/cant-edit-robots-txt/#not-writeable
Hope that helps.
Thank you.
I put both
/**
* Allow editing the robots.txt & htaccess data.
*
* @param bool Can edit the robots & htacess data.
*/
add_filter( ‘rank_math/can_edit_file’, ‘__return_true’ );
and
define (‘DISALLOW_FILE_EDIT’, false);
in the wp-config.txt but still not working
I found out that when I deactive the ‘Ithemes security’ pulgin, I could edit the robots.txt.
But I want to know which part of the plugin bans editing the robots.txt.
Hello,
Thank you for your patience.
In this case, we recommend getting in touch with the iThemes development team to assist you with this one since they are not allowing the file edit on your site.
Meanwhile, please check if you have this option in your iThemes security settings and try if it resolves the issue

Hope that helps.
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.