Custom fonts only shown on writer not others

Hoi!
Using the latest AIO. I added custom fonts via /settings/admin/richdocuments and it shows up only in writer, not on calc nor on other editors.

Secondly, I have a Rubik font that includes multiple type. Is a .ttf file. Wanted to replace with the existing one. How to do it?

Here’ is my source for the font

Sorry If I missed something helpful.
Please write me in detail. I’ll provide them.