Please check that the module is grafted on the hook :
depending on your version of Prestashop
Prestashop 1.7 => displayReassurance
Prestashop 1.6 => displayReassurance
If it doesn't show up, also check the presence of the hook in the code of your theme
note : this hook must not be inside a tag <form></form>, in case of doubt consult the developer of your theme
