mimosica

Hello, I have a big problem... I'd like to be able to type in Japanese using the text tool in Affinity Designer, but whenever I use the text tool and type in Japanese, it gives me these yellow blocks... I think that Affinity Designer is available in Japanese as well, so I was wondering if this was a glitch, or if Japanese text is not supported in the English language software? I need to use Japanese in my work so it would be most helpful..... thank you!