Hello, I tried to add my own fonts to Creative Cloud via CC Desktop App. I've added my fonts and from the app they seem on the cloud. But when I switch to active fonts tab I cloud see them on the list. Also not in the deactive fonts.
So first step can't done, to add fonts to the CC. Second step is to use them on Spark Post iPad App.
Sorry for the delay in response. Would you mind checking this page: https://helpx.adobe.com/in/creative-cloud/help/add-your-fonts-to-creative-cloud.html#:~:text=Select%....?
Let us know if that helps.