Embed font for Epub/ebook - inDesign

[mwagner111]

Kindle is dropping single letters like "a" and "I" in new ebook. Frustrating. 

How do I embed for Epub? I don't see any option as I export.

And/or how do I embed my fonts (Optima) into original inDesign doc?

Suggestions?

Thanks, MLW

[James Gifford—NitroPress]

First is this for fixed-layout EPUB (FXL), or reflowable? I'm suspecting the former, since it has very little control over fonts at export. 

Some fonts just don't export/embed well, in either EPUB or PDF. These are mostly older fonts with limited font info or even broken encoding. 

Try substituting another font, preferably a known good Adobe one, to see if this problem goes away.