Yoga Alliance International is a Member of the Prestigious Complementary Medical Association
In simple terms, the "Save Data Link" is a digital bridge between your game progress and the cloud. Angry Birds 2 does not store your level, birds, gems, or black pearls solely on your phone. Instead, it uses a cloud-based system tied to third-party services.
Your cloud save will sync, and you will be back where you left off. Troubleshooting: Why Can't I Find My Save Data Link?
If you have an old screenshot of your main menu or loading screen, look for the long string of letters and numbers.
Beyond basic security, linking data offers several functional benefits: Can't access account after cloud progress error? - Facebook
If you prefer not to use Google or Apple’s systems, or if you are switching from Android to iOS (cross-platform), Facebook is the most reliable "Save Link."
Yoga Alliance International is a Member of the Prestigious Complementary Medical Association