I downloaded the wallet this morning... A friend sent me 100 rubycoin and I put 1.8342RBY on it....
but I tried to skate and he said I dont have mature coin

I never skate before, this is my first time... need some help..
And also .... something happen... I keep my wallet open for the stake and a mysterious transaction appear... someone took 100RBY ....
But when I go in the console... the message said: 12:56:18 Wallet is unlocked for staking only. (code -13)
Hope I can get a answer fast
thanks
You need to have your coins in your wallet at least 8 hours to mature before your wallet can start to stake. How many do you have in your wallet?