When opening up a prototype from a Figma design document to the prototype presentation within the Figma app, the prototype opens up to 100% and not Fit to Screen. Fit to Screen should be the default according to online resources here: https://help.figma.com/hc/en-us/articles/360040318013-Present-designs-and-prototypes.
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.