Fonts some letters are showing as Cross (cross)

As you can see here, I'm using the "Kozuka Gothic Pr6N" font. In this screenshot, the upper one is screenshot, and the below one is a text that I'm using. Client gave me the font specifically to use but two of the letters are working perfectly fine but two are not. I just want to use them, I can't even replace them as the client told me specifically to use them. So yeah is there any way to make these letters work. I hope someone will help me out on this one. Thank you!
