Problem with DS1307 on KC868-A6

[Ramalcu]

find "pins_arduino.h" in your computer, open it, then you will see:
static const uint8_t SDA = xx;
static const uint8_t SCL = xx;

just replace xx with correct pin number.

I already found "pins_arduino.h" and modified it. Since then I see activity on the I2C with your test program. However, the result is an endless repeating telegram that doesn't receive any Time as answer. Please see the analyzer pictures. Furthermore the monitor on Arduino IDE is showing the "RTC is NOT running, let's set the time!" message while booting and the returned data which doesn't reflect the activity seen in the analyzer is always the same as per the attached picture.

Any further Idea?
Would be possible to receive a bin file for KC868-A6 to be loaded straight forward on the board?

Thank you!