WP Query ignores args although it uses them

Hello,

I am trying to make a xml feed that will show posts based on GET data in URL (aka get.php?FromDate&ToDate). I have the script and all working but the WP Query queries all messages (posts_per_page is set and shown in query_vars) and they are not sorted by date.

For FromDate=2015-03-03-000000&ToDate=2015-03-04-235959
it shows following
query vars

Array
(
    [posts_per_page] => 3
    [orderby] => date
    [order] => DESC
    [date_query] => Array
        (
            [after] => Array
                (
                    [year] => 2015
                    [month] => 03
                    [day] => 03
                )

            [before] => Array
                (
                    [year] => 2015
                    [month] => 03
                    [day] => 04
                )

            [inclusive] => 1
        )

    [error] =>
    [m] =>
    [p] => 0
    [post_parent] =>
    [subpost] =>
    [subpost_id] =>
    [attachment] =>
    [attachment_id] => 0
    [name] =>
    [static] =>
    [pagename] =>
    [page_id] => 0
    [second] =>
    [minute] =>
    [hour] =>
    [day] => 0
    [monthnum] => 0
    [year] => 0
    [w] => 0
    [category_name] =>
    [tag] =>
    [cat] =>
    [tag_id] =>
    [author] =>
    [author_name] =>
    [feed] =>
    [tb] =>
    [paged] => 0
    [comments_popup] =>
    [meta_key] =>
    [meta_value] =>
    [preview] =>
    [s] =>
    [sentence] =>
    [fields] =>
    [menu_order] =>
    [category__in] => Array
        (
        )

    [category__not_in] => Array
        (
        )

    [category__and] => Array
        (
        )

    [post__in] => Array
        (
        )

    [post__not_in] => Array
        (
        )

    [tag__in] => Array
        (
        )

    [tag__not_in] => Array
        (
        )

    [tag__and] => Array
        (
        )

    [tag_slug__in] => Array
        (
        )

    [tag_slug__and] => Array
        (
        )

    [post_parent__in] => Array
        (
        )

    [post_parent__not_in] => Array
        (
        )

    [author__in] => Array
        (
        )

    [author__not_in] => Array
        (
        )

    [ignore_sticky_posts] =>
    [suppress_filters] =>
    [cache_results] => 1
    [update_post_term_cache] => 1
    [update_post_meta_cache] => 1
    [post_type] =>
    [nopaging] =>
    [comments_per_page] => 50
    [no_found_rows] =>
)

And the full code is at:
https://pastebin.com/ngy4GnNC

I also thought it might be some conflicting plugin or it would cause my theme but I don’t have anything that might cause this in my functions.php file.