Table-ShortCode in a Theme-Element does not work

Hi, thanks for the great theme. But I have trouble with my appointments table “Termine”
I used the TablePress Shortcode in a page “Termine” successful. But once a second page will be part of the theme controlled page service-option /Middle of the services) the short code [table id=OffKurse /] does not work. That is why I have to copy the table a second time directly to the page in html.
Where is the problem with that service page and what can I do with only a little experience in css?
Sorry for the “simple” question, but my hope using TablePress was not to loose in too much xml and css.
Thanks for any help.
Irina Stobbe
· Website: http://wp.steam-service.de
. theme TF Construction Version: 1.5
· TablePress: 1.8
· TablePress (DB): 34
· TablePress table scheme: 3
· Plugin installed: 2017/02/21 09:58:25
· WordPress: 4.8.1
· Multisite: no
· PHP: 7.0.22
· mysqli Extension: true
· mySQL (Server): 5.6.37-log
· mySQL (Client): 5.5.52
· ZIP support: yes
· UTF-8 conversion: yes
· WP Memory Limit: 40M
· Server Memory Limit: 256M
· Magic Quotes: off
· WP_DEBUG: true
· WP_POST_REVISIONS: true
The page I need help with: http://www.steam-service.de/

I’ve ask for support in TablePress-App:
https://ww.wp.xz.cn/support/topic/table-string-in-a-thime-element-does-not-work/#post-9471441

The page I need help with: [log in to see the link]