That's a fairly common linux issue. You'll either need make sure it's using the right network adapter, or google the exact model of the adapter/interface you have and see if someone solved it already.
You keep going on about the same things over and over. If it doesn't make much difference anymore, please take your negativity elsewhere.
Assuming that you haven't transferred any coins to the KeyOS wallet yet. Open up terminal-Type this command then hit enter: rm -r ~/.KeyCoin-Then type "KeyCoin" (without the quotes) and hit enter. That will run the wallet for as long as the terminal is open. I assume the wallet has some sort of auto-start thing set up, so if you don't get the same error as before I would just reboot back into KeyOS again and it should execute normally. Then for the staking thing, I have no idea. I'm yet to wrap my mind around PoS.