@tekka said:

@Daemon-D Can you explain how you solved the issue - I'm sure other user could also profit if they face a similar problem. Thanks.

The problem was solved by moving to the top of the sketch exactly like the to test the sketch before #include

// Enable debug prints to serial monitor
#define MY_DEBUG 

// Enable and select radio type attached
#define MY_RADIO_NRF24
//#define MY_RADIO_RFM69

// Enabled repeater feature for this node
#define MY_REPEATER_FEATURE

#include <SPI.h>
#include <MySensors.h>