Epic incubator activated, 21 cash required to speed up, 25 cash in the bank:
Incubator contents show rare incubator, not epic:
Unable to speed up incubator, despite sufficient cash reserves:
Hey oneiroid, contact our support team at firstname.lastname@example.org with your support key and those screenshots so they can investigate further. In the meantime, try force closing and relaunching the game and see if that helps.