Todxx, your Lyra2REv3 Dev-Pool is often not available these days, so mining is reduced. Can you please check that?
Confirm, nicehash cnr mining - many rejected shares - job not found.
And "Dev pool connection was closed by remote side. Mining will proceed at reduced rate etc etc"
Same problem with Dev pool connection.

What option for disable colors? Blue color is very unreadable... (only linux, windows colors - cyan is ok)
The dev pool connection issue you guys are seeing today is likely because we are doing maintenance on the dev pool which often requires miners to reconnect.
However, the miner should reconnect to the dev pool about 10-15 seconds after a disconnect, so the total effect for your hashrate should not be noticeable.
As long as you see the message "Dev pool connected and ready." after the error for the dev pool connection being closed, it means the miner is good to go again.
@Velmerk The option to disable colors is --disable_colors