Peugeot 206 2004 x-line automatic gear problem

I have a problem while driving on the long road, the vehicle was passing unconsciously in gear shifts, and was not eating gas.

Later, by warning, the vehicle turned on the snow and sports lights and started to not shudder gas. I stopped, stopped the car, waited for half an hour, started it again, the lights went out, went without forcing. Short distances are not a problem, but after using 1 hour fln, the same happens. and it goes unconscious, shifts in gear, sometimes knocks, sometimes goes up to 3500 revolutions and shifts, even if the speed goes up, the vehicle goes unconscious. All the maintenance was done by the way. My vehicle (154 thousandth gasoline)