There's a number of ways to fix this problem:
1. Check your internet connection. Make sure it's working and is stable 🌐
2. Make sure your game is connected to Facebook 🔃
3. Restart your device. You may be experiencing temporary problems sending and receiving data, and restarting your device is the easiest way to fix them 📴

After that, you should see your missing lives back in the game 💕

PLEASE NOTE that the lives you receive from your friends expire in two weeks if you don't use them ⏰

Please be aware that access to Facebook programs and services may be restricted in certain countries or regions. In such cases, we comply with local laws and regulations.