How many coins do you have?
i got coins few times.
on my wallet or in total?
on my wallet 1200. an since 22.02.2018 the wallet runs 24/7
an i got 0 coin.
It is bad luck. But coin quantity is too small.
For better staking you can buy more coins (or use faucet for obtain it free)
You can biuld Staking statistics via data of explorer