I am the owner of the gnome-turk@gnome.org list.

There is no capctha on the Turkish list info page for gnome-turk[0], and people cannot subscribe to our list as a result.

The English version of the page has the captcha, so I tried to add the missing captcha directly to the HTML of the info page[1] by adding this part:

"<tr>
      <tr>
        <td>Please fill out the following captcha</td>
        <td><mm-recaptcha-javascript></TD>
      </tr>
      <tr>


But I got this message:
The page you saved contains suspicious HTML that could potentially expose your users to cross-site scripting attacks. This change has therefore been rejected. If you still want to make these changes, you must have shell access to your Mailman server.

I appreciate your help to resolve this issue.

[0] https://mail.gnome.org/mailman/listinfo/gnome-turk
[1] https://mail.gnome.org/mailman/edithtml/gnome-turk/listinfo.html