Please make sure all styles are:
• In a Figma file that is published (as a library).
• Applied in the design (this means they are applied on some element in your design file).
Figma’s API forces a specific limitation upon us where the style both needs to exist in your published library, and also needs to be applied in an element in your design file (like on a` rectangle or other shape, for example) in order for us to “see” it.
If you are absolutely sure that those styles are applied in the design and the Figma library is published and up-to-date, please try unlinking your design file in Supernova and try to link it again. If the issue persists after this, please contact us, and include an invite to your Figma file (with at least viewer access), so we can check it out and find the issue.