Issue with icons

Hey I’ve been trying to import my own icon set to my weweb project but for some reason there are always icons missing and I don’t know why and how. I use icomoon for converting my svgs to a icon font.

The icons are in my css and json file but either show up as a white square or not at all.

Does someone know how to fix this or a better solution to what I am trying to do?

Thanks in advance.