DateTime Field EasyForm only show date and time picker for logged in users

In Plone 5.2.4 I installed the EasyForm add-on (version 3.0.5), create a new form and add a DateTime field. Once logged in, you can see the date and time picker. For non-logged in users, a simple entry field is shown.

see Collective.easyform Date and Datetime fields do not work for anonymous - #3 by mactrash