[CoursePress] Hebrew language does now work correct with custom certificates

I have courses in non-latin language (Hebrew) and I'm noticing that my certificates are coming out with ?????? signs instead of the course name.
Do the certificates support non-latin lanaguages like Hebrew? Is there a way to fix this issue?
This works fine before.
https://cdn.livechat-static.com/api/file/lc/att-old/8801096/87a9fbf9bc8bb6ba4b282d7d56ef5a2e.png