You can earn additional starcoins by completing offers on the offer wall. Offers are provided by separate company and they are responsible for awarding
starcoins, if you have any problems you should use support button on the offer wall. There are situations when you may not get starcoins after completing
an offer, there may be many reasons for that. You should use support button on top of the offer wall if you didn't receive starcoins. Offers page is still in beta, we'll try to improve it's stability in the future.
Disclaimer: starcoins are not real money and cannot be redeemed for real money. It's a virtual currency that at the moment can only be spent on additional entries for giveaways.
By completing these offers you're supporting my channel and increasing your chances to win in giveaways, thank you very much guys:)