You can find the lives your friends have sent you in Recipe Card's "Inbox" tab.
- Tap the Recipe Card icon on the bottom left hand corner Map screen.
- Tap the "Inbox" Tab.
- Tap the "Accept" button.
IMPORTANT NOTE: If your lives are full, you won't be able to collect your free lives. However, those lives will still be in your Inbox ready for you to use when you need it!