B-l072z-lrwan (End Device) Connection Problem

Hi.
I’m trying to connect b-l072z-lrwan with TTN V3.

I flashed this board with I-Cube-LRWAN1 software(LoRaWAN / End Nodes).
Then in TTN , I added end device.
I matched NwkSkey, AppSKey, Device address and
set Activation mode as ABP mode.

Also I matched my gateway frequency and end device frequency.

But in TTN V3, this device cannot be found.

So I want to ask that what is wrong with this.
I searched many times but I could not find the solution.

I have been struggling with this problem for a month.
Please help me.

plus. the gateway is dragino LG02.

This is a LoRa Gateway/Media Bridge NOT a LoRaWAN Compliant 8 Channel(min) Gateway - we call these DCPF’s a dual channel version of a SCPF (Use Forum search to see why these are not supported). Please disconnect this from TTN and get a LoRaWAN GW (Note even Dragino declare as private use & LoRa only). Get a Gateway and come back if your problems are not solved after that.

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