Custom fonts on iPad

I’m using a custom font to help my daughter sight-read tricky words - it’s all working fine on my mac, but I can’t seem to get it to work on the iPad. I believe I’ve followed instructions correctly but could do with some help!

  1. Can you provide any more detail about what isn’t working about it?

  2. Do you have the font _SAPI.ttf (with exactly that name) in your collection.media?

  3. Do these notes have another font applied to them, either in the card template or in the fields of specific notes?