I've downloading the font using the normal setup and also with IE 8 support from, when I open the demo.html page I can't see the icons in IE 11.
This is what's in the demo style.css page:
@font-face {
font-family: 'APicons';
src: url('fonts/APicons.eot?s9q0x9');
src: url('fonts/APicons.eot?s9q0x9#iefix') format('embedded-opentype'),
url('fonts/APicons.woff2?s9q0x9') format('woff2'),
url('fonts/APicons.ttf?s9q0x9') format('truetype'),
url('fonts/APicons.woff?s9q0x9') format('woff'),
url('fonts/APicons.svg?s9q0x9#APicons') format('svg');
font-weight: normal;
font-style: normal;
}