Upload me your sys.txt and I'll make the changes. It's already missing:
Spoiler: sys.txt
Code:
Please Login or Register to see the links

Before answering you ... I propose ... a ready to use functional and detailed solution ... why don't you apply it ...?

1/
xxx: is the exact name of the font you want to display on the navigation screen.
2/ The format of the fonts must be in .ttf and my friend iet8 says it well.
Dear logsog ,
Arabic lang worked perfect after i have changed the file with different ttf files(inside font foleder), Tank you for your help also thank s for friend Boki_Srb.
3/ Some fonts contain Latin (for English) and Arabic characters such as Tahoma, alarabiya... there are not many of them.

After verification it seems that the Fonts: NotoSansCJKsc in .ttf format does not recognize the Arabic language.

I advise you to put the fonts I put online in the indicated folder and use the sys.txt that I'll modify to do the Test.

Regards