Mandatory information about my setup:

Have I searched the tickets before posting? No
Have I searched the forum before posting? No
Have I read the documentation before posting (which pages?)? No
Joomla! version: 2.5.25
PHP version: (unknown)
MySQL version: (unknown)
Matukio version: 4.5.4
Direct link to the page that shows the issue: http://www.rastoa.de/termine-coaching/bookevent/2-licht-nerven-stimulation-kommunikation


Description of my issue:
The following error appears when will be posted

"Your book was not successful! Please accept the terms and conditions."

Tnaks for your help