Please, I need help. My drone is not working. I do all the calibrations correctly and I manage to arm the motors. But after a few seconds they stop. The blue rear lights blink. I don't know what they mean. I try to do an automatic takeoff, but nothing happens.

Por favor, necesito ayuda. Mi drone no funciona. Hago todas las calibraciones correctamente y consigo armar los motores. Pero en unos segundos se paran. las luces azules traseras parpadean. No se que significan. Intento hacer despegue automático y no hace nada.

Please, I need help. My drone is not working. I do all the calibrations correctly and I manage to arm the motors. But after a few seconds they stop. The blue rear lights blink. I don't know what they mean. I try to do an automatic takeoff, but nothing happens.