Support for fonts in CorelDraw

When changing keyboard layouts, some fonts become greyed out in CorelDraw list of „usable” fonts with that particular keyboard. I want to change a font to be compatible with CorelDraw. On this thread https://community.coreldraw.com/talk/coreldraw_graphics_suite_x8/f/coreldraw-x8/52535/some-fonts-are-greyed-out, someone says that fonts are not compatible with that keyboard. I looked for answers, but didn’t find any. I’m out of ideas.
With FontCreator, adding in FontProperties → Ranges the 1250 codepage didn’t solve the issue. Font changes to grey when changing keyboard from EN to RO. When I’m typing unicode letters like șț/ȘȚ only question marks are diplayed, even though those characters (șțȘȚ) are present. What am I missing and what should I change/add in the font properties?
Thanks!

I wonder why CorelDraw makes life difficult for its users?

Maybe try entering Design Languages.