Big ESP32 + SX127x topic part 3

Hi, I recently bought a pair of TTGO32V20 and a TTGO-Beam. Am able to get direct-lora connections to work through the Arduino programming environment. Nice.
Am unable to get the TTGO32V20 working on TTN. Although I read all 3 topics (and a lot more) I guess I missed something.
My baseline is the coding by NicBKW (BIG ESP32 / SX127x topic part 1)
I wired D1 to pin 33
TTO32LORA
I made pin mapping as follows:
// Pin mapping
const lmic_pinmap lmic_pins = {
.nss = 18,
.rxtx = LMIC_UNUSED_PIN,
.rst = LMIC_UNUSED_PIN,
.dio = {26, 33, LMIC_UNUSED_PIN},
};
My TTN settings are as follow:
TTN_Stuff
Added DEVICE EUI and APPLICATION EUI as little endian (LSB first).
Coding:
static const u1_t PROGMEM APPEUI[8] = { 0xDE, … 0x70 };
static const u1_t PROGMEM DEVEUI[8] ={ 0xB6, … 0x00 };
static const u1_t PROGMEM APPKEY[16] = { 0x33, … 0x3A, 0x35 };

And it does not work. I believe error 17 “something else”.

I compiled PAXCounter from PlatformIO (unknown to PlatformIO, but I eventually managed to upload) and after some time I saw the green button “last seen …few minutes ago”. No payload though, but I am not interested in getting PAXcounter to work, just checking if there is a hardware failure. So there is not.

What am I missing?

[update]
Two screen shots, Unknown Event17 and Join Failed 17.
UnknownEvent17

JoinedFailed17