Hello Mark,
I've been using Certificate for years without a hitch. Suddenly I, the Admin and Course Creator, cannot access the certs. Everyone else can, including students.
The Certificate topic is showing a lock.
This is what comes up :
Coding error detected, it must be fixed by a programmer: get_extra_user_fields() has been removed. Please use the \core_user\fields API instead.
Many thanks,
Ray