Nice to see that much developement for zettel

I wish i could mine it again, but with a network hashrate of 170 MH/s its not really profitable (6 cores, 150 KH/s). I got the last Block a week ago (02/05/2018) and just wasting my hashpower atm here. Please, someone set up a pool
Your chances are still good to find 1 block a day on average.
Is your mining-wallet running as full node with more than just the usual 8 connections?
It will help reduce orphans.
Because the worst situation a guy like you can be in, is to find a block and see it vanish away as an orphan...

See that you have 50 connections open at least.
How to set more than 8 connections? I have 3 ubuntu mining machines and getinfo says they all have 8 connections.