Hi
My setup is:

Hardware

GW
Arduino Nano 5v
RFM69
DC-DC from 5v to 3.3v and 100uF capacitor

Node
Arduino ProMini 3.3v
RFM69

Software

GW

#define MY_DEBUG

#define MY_RADIO_RFM69
#define MY_RFM69_FREQUENCY RFM69_868MHZ
#define MY_GATEWAY_SERIAL

*#define MY_INCLUSION_MODE_FEATURE
#define MY_INCLUSION_MODE_DURATION 60
#define MY_DEFAULT_LED_BLINK_PERIOD 300

#include <MySensors.h>*
void setup(){}
void presentation(){}
void loop(){}

Distance between GW and Node is aprox. 1m

Node

#define MY_NODE_ID 100

#define MY_DEBUG
#define MY_DEBUG_VERBOSE_RFM69
#define MY_DEBUG_VERBOSE_RFM69_REGISTERS
#define MY_DEBUG_VERBOSE_TRANSPORT
#define MY_DEBUG_VERBOSE_CORE

// Enable and select radio type attached MY_RADIO_RFM69
#define MY_RADIO_RFM69
#define MY_RFM69_FREQUENCY RFM69_868MHZ

#define MY_PARENT_NODE_IS_STATIC
#define MY_PARENT_NODE_ID 0x0

#include <MySensors.h>
void presentation() {
sendSketchInfo("TestNode", "1.0");
present(0, S_ARDUINO_NODE, "Counter");
}

Logs

GW

0;255;3;0;9;0 MCO:BGN:INIT GW,CP=RRNGA---,FQ=16,REL=255,VER=2.3.2
0;255;3;0;9;5 TSM:INIT
0;255;3;0;9;7 TSF:WUR:MS=0
0;255;3;0;9;12 TSM:INIT:TSP OK
0;255;3;0;9;19 TSM:INIT:GW MODE
0;255;3;0;9;22 TSM:READY:ID=0,PAR=0,DIS=0
0;255;3;0;9;26 MCO:REG:NOT NEEDED
0;255;3;0;14;Gateway startup complete.
0;255;0;0;18;2.3.2
0;255;3;0;9;30 MCO:BGN:STP
0;255;3;0;9;37 MCO:BGN:INIT OK,TSP=1
0;255;3;0;9;44 TSM:READY:NWD REQ
0;255;3;0;9;49 ?TSF:MSG:SEND,0-0-255-255,s=255,c=3,t=20,pt=0,l=0,sg=0,ft=0,st=OK:

Node

16 MCO:BGN:INIT NODE,CP=RRNNA---,FQ=8,REL=255,VER=2.3.2
28 TSM:INIT
28 TSF:WUR:MS=0
34 TSM:INIT:TSP OK
38 TSM:INIT:STATID=100
43 TSF:SID:OK,ID=100
45 TSM:FPAR
47 TSM:FPAR:STATP=0
49 TSM:ID
49 TSM:ID:OK
51 TSM:UPL
1269 !TSF:MSG:SEND,100-100-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=0,st=NACK:1
3278 TSM:UPL
4497 !TSF:MSG:SEND,100-100-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=1,st=NACK:1
6506 TSM:UPL
7725 !TSF:MSG:SEND,100-100-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=2,st=NACK:1
9734 TSM:UPL
10952 !TSF:MSG:SEND,100-100-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=3,st=NACK:1
12961 !TSM:UPL:FAIL
12963 TSM:FPAR
12963 TSM:FPAR:STATP=0
12967 TSM:ID
12967 TSM:ID:OK
12969 TSM:UPL
14190 !TSF:MSG:SEND,100-100-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=4,st=NACK:1
16199 TSM:UPL
17418 !TSF:MSG:SEND,100-100-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=5,st=NACK:1
19427 TSM:UPL
20645 !TSF:MSG:SEND,100-100-0-0,s=255,c=3,t=24,pt=1,l=1,sg=0,ft=6,st=NACK:1
22657 TSM:UPL

Any info/suggestion is highly appreciated.
Thank you

Here are the pictures:

But my question (maybe stupid question) is: It is possible the the radio module to be broken only on the "send side"?

Thank you.

@mfalkvidd multimeter

Update: it seems the problem was the DC-DC convertor. I have replace it with an extwrnal power source and now it works.
I still don't understand what was wrong there because the voltage on the radio module was correct:3.3V