Windows 7 Safari browser :- In export file name japanese character are not shown

I have to face one problem on windows 7 safari browser.

When i export pdf file , japanese character of file name is not shown.

Based on your description, it doesn’t sound like this is related to Let’s Encrypt or TLS/SSL at all. You’d probably be better off asking this question somewhere else (maybe Apple’s support community), as it would be off-topic for this site.

Let me know if I misunderstood something about your question.