Articulate Review - PDF Export chinese characters not recognized

Hi everyone,

I have a Chinese course in Articulate Review and upon exporting the feedback of the reviewer, I noticed that the Chinese characters were converted to box symbols (see screenshot below). I've tried to change the text font to SimSun using acrobat pro, and I also tried to convert to word document but none of it seems to work. Upon exporting as an excel file, the texts are okay but I need a PDF or word document version.

Does anyone have a fix for this? Copying all the comments from the excel sheet to pdf/word seems to be time consuming especially if there are a lot of comments.

Thank you in advanced!