Ok, so I managed to move on. Now I can connect to settings page. I went to status --- cgminer configuration and inserted pool/worker/password for 2 of them.
When I press save and apply I see action - spinning circle and quote applying changes. That goes on for several minutes:
Applying changes
/etc/config/cgminer

Last time I waited 10 minutes, still no change so I just went to system --- startup and on line where cgminer is I pressed restart - nothing happened.
I tried status---cgminer configuration---save and apply then go to system---startup and start on cgminer line again nothing.
Actually when I try restart cgminer it give me "Bad gateway" message.