That's odd! You mean the header with the black background? It's the same font so it should be fine. If you can share at least part of your JSON, I could have a look and make sure everything is supported properly. If that's okay, you can send it to pablo@particlegs.com
From the character list you shared, I think I might be missing:
- ’
- →
- ↔
- ↗
I'll double check however if some look the same but are actually different characters. Thank you for the detailed list!