2012 Peugeot 308 peugeot 308 cc 2012 model, cannot start after battery died and replaced.

I was away from home for a long time and the battery died and the car went into economy mode.
I tried jump starting but economy mode persisted stopping me from starting it up. I decided that I must change the battery. I changed batteries 2 times before in past years and followed the bsi reset procedure where I put down the window, wait 3 mins etc etc.. and it worked before. However, this time it did not work….
I tried resetting the bsi several times finally it seemed to work and the car started and all functions like windows, up/down, roof retract and extract, indicators, headlights, beam, side lights, radio brake lights etc all worked. I shut the engine down and restarted, it started again. Then I decided to put the rest of the parts like filter intake etc back in place and close the car. I immediately tried to restart and …. Economy mode popped up again and it did not start! Now I have all windows closed, car I. Economy mode. I asked someone to help by leaving inside till I run the bsi reset procedure gain but no joy! One other thing. All fuses are ok and battery is supplying 12.44 V
How can I reset the car with all windows closed and working alone.. any ideas or new methods please?