Downloading fonts

I downloaded 2 fonts from AldeDesign. One is called Everything Calligraphy and the other is Yussan. The font is supposed to have heart designs in the letters. But when I download the font it only shows the basic characters. Why is this? FYI I am using a mac desktop. Frustrating - think this is going to be a problem with other fonts I try and download too.

Are you sure you downloaded the right file for your device. I think that might be the problem. Try deleting and redownloading