I’m affraid i can’t capture my screen although i can provide screenshots and a step by step description of what i did.
First i made sure Only office is closed, then downloaded the font from dafont (Pirate scroll for instance), then extracted the font in my download folder using winrar. Double clicked it and then clicked Install (“Installer” since my computer is in french, if it matters)
Then launched OnlyOffice, created a new document in the “create new” section. Finally i check in the fonts dropdown and the font isn’t there.
I can only add one picture but i check in inkscape and gimp and the font “PIRATE SCROLL” is listed in the dropdown menu.
Is it possible that the language the computer is in mess with the path of the fonts and Only Office might have trouble accessing it ?