can't display content in non Roman languages (Chinese, Japanese etc)

[Enyokid]

Hello,
I found that when the channel name contains Chinese symbols it cannot be displayed. For example, the M3U address “https://iptv-org.github.io/iptv/languages/zho.m3u” contains many Hong Kong channels, I found it seems to be because by the font of roku tv does not support the Chinese characters.And one solution is to use custom fonts in APP, the sample code is .but I don't know where to add it, can you please help to fix this problem.