If you have more than one Wiiny account on this phone, it is possible that Stars will be sent to the other account.
Check you are up to date with the Wiiny version.
Finally, check the following steps :
- In the STARCENTER : click on "Fyber" or « Ironsource »
- Menu on the top corner left : you can check the rewarded incentives and those in progress.
- Make sure your incentive is rewarded there. If it’s not, you can send us the name of the incentive and we will report it to the publisher.