Please increase font size.
Please increase the text size for keyboard buttons and decrease the size of the symbols above characters..
My phone has high dpi and I resize swiftkey to the max but still characters are small and hard to see when symbols on buttons are enabled.. especially the Arabic characters.
Gboard has symbols but the characters are big and make use of all the button size and the symbols are smaller.. Good for bad vision.
Also when typing in Arabic, the brackets are always reversed.. If I tap the button which makes a left bracket, the actual text becomes a right bracket.. This happens for all types of brackets.