Professional setup of the sitemap and robots.txt for a WordPress site
Robots.txt - the root file in the site folder, it is accessed by robots from Yandex and Google first of all when visiting your site.
Sitemap.xml - site map for search engines, with this file, search engines will be able to navigate your site.
Give access to the admin panel of the WordPress site.
If necessary, you may need to access the site's ftp server.