I was no table to add next post yesterday (daily limit for newbie reached), but issue with non working gpiod is already solved, reason was connected to my previous tries with installing wiringpi. It was uninstalled, but maybe something was left in the system. I uninstalled both, wiringpi and gpiod again, cleaned apt, installed gpiod again and it started to work.
So, many thanks for help and patience, now when I can control GPIO, I can write whatever I want, currently I’m thinking about using multicolor led, e.g. red (or none) for no network, blue for network connected, green for reaching google or cloudflare.
