Hi
Using custom certificate, UTF-8 Japanese characters display as ??? on the pdf certificate (although preview is fine).
I could only find this thread on the topic:
https://moodle.org/mod/forum/discuss.php?d=278521#p1197889
But that is related to mod/certificate, not mod/customcert
I tried to change the font of the element but it didn't help.
Thanks for your answer,
Sébastien