It's essential to understand how referrals are tracked, how rewards are earned, and how they can be redeemed. 5. Payment Issues: Research user reviews & feedgame rummyback about an app's payment process for referrals. Some apps may delay payments or have issues with processing rewards earned through referrals. To avoid falling victim to scams or encountering issues with refer and earn apps, it's crucial to conduct thorough research before participating in any referral program.