Add new fonts - Sway

How can i add or use different fonts rather than the ones already on the app? Such as Open Sans or Segoe UI.

WHY IT'S IMPORTANT?

These fonts present/show a specific style and feeling to the reader, which translates in clients or if not, it translates do experience. Both ocasions beeing extremely important for service providers and on Sway's presence in marketing.

I've talked to Microsoft's support in protocol 7097202386, and it was said that the app can't add new fonts such as the ones above. If so, Microsoft should add this function so that the app becomes something more flexible, sincronized with the user's intentions and in general better.