This keyboard was developed for keyboarding Nubian languages in the Coptic Script. The "Nubian (SIL)" keyboard is designed to work with the Sophia Nubian font. However, you can use this keyboard with any Coptic Unicode font.
If you have problems using the Nubian (SIL) Keyman keyboard, please contact:
User Support
SIL Writing Systems Technology
E-mail: mailto:fonts@sil.org