Once I locked it Im getting "Minting is suspended due to locked wallet". So I dont get any PoS coins... How to make it unlocked for good? I've search the whole wallet but cant find that option!
I would suggest not doing that. Just unlock it and leave it opened. It needs to be opened to Stake (afaict).
So I can mint coin only if I got my computer online, so that basiclly means to get max profit I need to be 24/7 ?
no, it doesn't have to be unlocked and running all the time. And the rate is always the same. You can't maximize profit by leaving it on all the time. I suggest you read up on POS in general.
Is this your personal observation? My understanding is the reason you get Stake rewards is not just because you own coin, but because you keep your wallet online to provide hashing power to the network to confirm transactions. Have you had your wallet closed to 2 or 3 days and still got the PoS reward for those days? (Yes I've read about PoS are peercoin of which this coin is a fork of.)