I noticed some pages not appearing in the sitemap. But I found it in the changelog for that crawling under the "Skipped URLs - crawled but not added in sitemap" section.
I read that in that list you have "URL - Reason for skipping", but there is no reason any page. Some of the 204 skipped URLs have " - lu" after the URL but I have no idea what does it mean either.
In the configuration, the "Exclude URLs" is empty.
I litteraly have no clue on what's going on. Any help will be appreciated.