Usually i would receive free SS afrer login, but just now, i got this Gift claim pop up, so I just clicked it, and tried to check my SS, and there're none of bonus SS appear..what the hell is the meaning of it? And i can't login and got my free SS as well, for it says that i just login...what kind of trick is that? 
SS gone after click the bonus Gift
Riedin that gift thing is the daily check in, you can't check in in the "get rewards" after clicking on it. And in the check in you probably received exp or other stones, insted of ss. It has been happening for around 3 weeks now.