TTN otaa receiving

[minusplusminus]

Hi, thank you for your code. I'm using a TTGO ESP32 SX1276 Lora 868 ali express

parameters = {
        'tx_power_level': 2,
        'signal_bandwidth': 'SF7BW125',
        'spreading_factor': 7,
        'coding_rate': 5,
        'sync_word': 0x34,
        'implicit_header': False,
        'preamble_length': 8,
        'enable_CRC': True,
        'invert_IQ': False,
    }

with enable_CRC changed to true and

      'LORA_CS': const(18),
      'LORA_SCK': const(5),
      'LORA_MOSI': const(27),
      'LORA_MISO': const(19),
      'LORA_IRQ': const(26),
      'LORA_RST': const(14),

Sending dat is working. But still i cannot get any data received. To send data I tried to send two bytes using uplink in ttn console. 'Frame Counter Width' is 16 and 'framecounter checks' is off. Where Do I have to look at or debug tips to fix this issue?