Check the balance
Return to the relevant booster or currency screen and compare the total. Some rewards arrive without a separate animation.
Restart once
Close and reopen the game after confirming your progress is synced. Repeated force-closing during an ad can make the issue harder to diagnose.
Change networks carefully
Try a stable Wi-Fi or mobile connection before another attempt, but avoid switching while the ad is playing.
Contact support
Use the in-game support route or the verified store contact and include screenshots, version, device, and time.