I think the date problem solved by putting the witdh to "0" but the date is ok when I click on “preview” but not when I clik on “get the certificate” ; there, no date at all.
I made the update of moodle to Moodle 3.1.3 (Build: 20161114) and the update of customcertificate but without success for my date problem.
I change the order of the fields in the certificat but no change.
Some help ?