postie, everything is ok but cron job is not doing anything

test config ok
cron job is there

check_postie_hook None
postie_check()
2019-05-02 11:14:33 (2 minutes 47 seconds) Every 30 seconds

run manually ok.

so what is happening?
is postie_check() an existing function? I could not find it.

config debug file:
Postie Configuration Test
OS: Linux server18.hosting2go.nl 2.6.27.29.super.2 #4 SMP Tue Feb 28 13:38:30 CET 2017 i686
PHP Version: 7.2.11
PHP error_log:
PHP log_errors: Off
PHP get_temp_dir: /tmp/
PHP cURL version: 7.35.0
MySQL Version: 5.6.29
WordPress Version: 5.1.1
WordPress Singlesite
WP_TEMP_DIR: (none)
WP_HOME: (none)
home_url(): http://www.svnuenen.nl/svnuenen2
WP_SITEURL: (none)
site_url(): http://www.svnuenen.nl/svnuenen2
WP_DEBUG: Off
WP_DEBUG_DISPLAY: On
WP_DEBUG_LOG: Off
WP_MAX_MEMORY_LIMIT: 256M (default)
WP_MEMORY_LIMIT: 40M
imagick version:
gd version: 7.2.11
image editor not supported: WP_Image_Editor_Imagick
image editor supported: WP_Image_Editor_GD
WP_Image_Editor_GD supports: image/jpeg
WP_Image_Editor_GD supports: image/png
WP_Image_Editor_GD supports: image/gif
Registered image sizes
Array
(
[0] => thumbnail
[1] => medium
[2] => medium_large
[3] => large
[4] => post-thumbnail
[5] => twentyfourteen-full-width
)
No registered filters for image_downsize
No registered filters for wp_handle_upload
No registered filters for wp_get_attachment_thumb_file
No registered filters for wp_handle_upload_prefilter
No registered filters for wp_handle_sideload_prefilter
No registered filters for pre_move_uploaded_file
image memory limit: 256M
DISABLE_WP_CRON: Off
ALTERNATE_WP_CRON: Off
WP_CRON_LOCK_TIMEOUT: 60
iconv: present
Active plugins
Array
(
[0] => postie/postie.php
)
Postie is in /home/vhosts/svnuenen.nl/httpdocs/svnuenen2/wp-content/plugins/postie/
Postie Version: 1.9.33
POSTIE_DEBUG: On
No registered filters for postie_filter_email
No registered filters for postie_filter_email2
No registered filters for postie_filter_email3
No registered filters for postie_author
No registered filters for postie_post_before
No registered filters for postie_post_after
No registered filters for postie_file_added
No registered filters for postie_gallery
No registered filters for postie_comment_before
No registered filters for postie_comment_after
No registered filters for postie_category_default
Registered filters for postie_log_debug
Registered filters for postie_log_error
No registered filters for postie_session_start
No registered filters for postie_session_end
No registered filters for postie_preconnect
No registered filters for postie_post_pre
No registered filters for postie_email_reject_recipients
No registered filters for postie_email_notify_recipients
No registered filters for postie_email_reject_subject
No registered filters for postie_email_notify_subject
No registered filters for postie_email_reject_body
No registered filters for postie_place_media
No registered filters for postie_place_media_before
No registered filters for postie_place_media_after
No registered filters for postie_raw
No registered filters for postie_bare_link
No registered filters for postie_category
No registered filters for postie_file_added_pre
No registered filters for postie_include_attachment
Clock
This shows what time it would be if you posted right now

Wordpress timezone: Europe/Amsterdam (2)
Current time: 2019-05-02 11:10:26
Current time (gmt): 2019-05-02 09:10:26
Postie time correction: 2
Post time: 2019-05-02 11:10:26
Encoding
default_charset: UTF-8
DB_CHARSET: utf8
DB_COLLATE: database default
WordPress encoding: UTF-8
Connect to Mail Host
Postie connection: sockets
Postie protocol: imap
Postie server: server18.hosting2go.nl
Postie port: 143
pConnection: mailbox: INBOX
Connecting via Socket
Socket: server18.hosting2go.nl:143
Socket error: 0 – (Resource id #285)
Socket: IMAP
socket write: (login) LOGIN/APOP/PASS
socket read (2) :* OK [CAPABILITY IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA IDLE ACL ACL2=UNION STARTTLS] Courier-IMAP ready. Copyright 1998-2004 Double Precision, Inc. See COPYING for distribution information.
socket write: A0002 SELECT “INBOX”
socket read (7) :* FLAGS (\Draft \Answered \Flagged \Deleted \Seen \Recent)
socket write: A0003 STATUS “INBOX” (MESSAGES)
socket read (2) :* STATUS “INBOX” (MESSAGES 1)
Successful IMAP connection on port 143
# of waiting messages: 1
socket write: A0004 LOGOUT
socket read (2) :* BYE Courier-IMAP server shutting down
Test complete