Engine does not start, lamp next to the clock flashes

Good day, yes, my Escort has been spinning since yesterday, too. Hold on, the story starts … I wanted to start the car, all the lights in the cockpit go on properly.Key on start, nothing. Just a clacker from the ZEB, so click .. klack ………. click .. klack. All possible tried, no success. Then I hung out the ZEB once, checked all fuses, all ok. Then start again, nothing. Now the 29 pulled from the top of the ZEB, car starts through. All good. But the indicator light is constantly flashing next to the clock. So, car parked, test start … nothing. Now I notice that the switch for the tailgate does not work. So 29 off again, start … goes. Car off, 29 back in, start — click .. clack …… etc. Nothing. Can that be that the tailgate interrupts the start process because the circuit in the ZEB is not properly closed? When I lock the car, the lamp flashes at the clock The car doesn’t start, because the flap does not report “to”. Can someone help me, thank you for your efforts. lg scyxs