I don't mind looking but do you have the complete Turkish mod on esoui? If not is it on GitHub? To test it I really need to just load the entire mod myself. I only speak Spanish and English but I have all 10 languages that I can choose from if needed. I will be able to better understand the issue with the complete mod, and all font files etc. If you don't have the entire mod on ESOUI and don't want to may I have a Mediafire link?
Also I will probably check the loaded fonts with MerTorchbug. So having everything will help.
That file requires
LibMediaProvider.
Add to TurkishScrollsOnline.txt
## DependsOn: LibMediaProvider-1.0>=17
EDIT: Also I just noticed your EVENT_ADD_ON_LOADED isn't set up properly. Once I have the entire TurkishScrollsOnline I can look into it.