Hey guys. i think that I'm having some issues with the wallet that I'm using.
From yesterday to today, it was stacking some new mature coins, normally.
However, it's not stacking anymore, anything at all. It keeps saying, again, that I don't have mature coins. But I did.
After restarting all the wallet, unlocking, closing, unlokcing again, and still nothing.
I noticed too that when i'm starting the wallet, some error appears:

Hope you can discover what's happening and can go mining again
I had the same problem yesterday and resolved it by removing the blockchain data in appdata and re-downloading it.