Hello,
I have 380 coins in my wallet and trying to stake.
Every day I see message: Expected time to gain reward is 10 days.
But for 25 days I've got nothing...
Why?
I guess you need more coin to get rewards. Let's say about 2000 coins. And even if it say reward per some time, it doesn't mean you can get a stake in that time.
It's a possibility.
Is there any sense for POS with ~380 coins in the wallet?
How long should I wait to get something?
10 - 25 days seems about right (maybe you're just unlucky this month because its taking so long to win a staking reward). The staking reward is given via lottery so people with bigger wallets will have more chances of winning. but when you win it will be a little over 2 XSPEC.