Open the profile card on the build canvas and edit any field. The change saves automatically and the save indicator confirms it.
Sections that were written before the change are marked as behind. That badge is the engine telling you the text may still say the old thing — regenerate those sections, or edit the sentences by hand if the change is cosmetic.
Renaming the business does not create a new plan. The library entry keeps its identity, so your saved link and share URL stay valid.