Problem with accentuation on Certificate

Hello, I loved your plugin, I really needed something with certificate and you have it! It´s almost perfect, except that i´m from Brazil and portuguese language has a lot of accentuations on words that you don´t have in english, so my certificates get a little messed up because of this. Is there a way to fix this?
Thanks a lot!

https://ww.wp.xz.cn/plugins/quiz-master-next/