Activated Adobe fonts missing from XD

I've activated a number of fonts on Adobe Fonts and was working quite happily on XD with these fonts on Friday. Today CD is reporting that the fonts are missing. I've tried logging out and back into my Adobe account. I've tried deactivating and reactivating the fonts. I've restarted XD. Am I missing something? Was all working fine on Friday with these fonts but can't for the life of me get it working this morning. A temporary network problem or is this a known bug?