Thank you for contacting us about the empty sitemap, @egoncalves!
Our sitemap feature relies on WordPress Cron, as we only generate the main sitemap every 12 hours – it is not generated each time the page is requested.
I noticed that WP Crontrol is active on your site. It is possible that one of Jetpack’s scheduled events has been removed, preventing sitemaps from generating.
Please completely reinstall Jetpack, which should replace any missing events. You can follow these steps to do that:
1. Start at Plugins → Installed Plugins.
2. If Jetpack is currently active, click Deactivate to disable it. Then click Delete to remove it from your site:
3. Go to Plugins? → Add New.
4. Search for “Jetpack by WordPress.com”.
5. Click Install and then Activate.
When Jetpack is installed, click the green Set up Jetpack button to reconnect.
Please let us know if the sitemap still doesn’t appear after reinstalling Jetpack. Thank you! ??