LinkFall support
LinkFall is a single-player offline puzzle game by Uplivra Technologies LLC. Clockwork is free, and one $4.99 in-app purchase unlocks three more worlds.
Contact
Email support@uplivra.com.
Restore the upgrade
Tap a locked world, then tap "Restore purchase". Make sure you're signed in to the same Google or Apple account you used to buy it.
Refunds
Refunds are handled by Google Play or Apple: