Details: I can not find the cause of issue. I configured necessary files, connected it to same network, added to TTN. Looked for other fault variables. Still disconnected.
Well, a gateway connection is a very simple process, but problems can happen. Most of them are very simple do fix:
Gateway EUI must to be the same in both sides, gateway and LoRa network server (TTN);
The frequency plan must to be the same in both sides, in my case Brazil are using Australian standard AU915 and I am using subband 1: AU_915_928_FSB_1 . You will need to configure the authorized frequency and sub-band for your location
Gateway Server Address must to be the same in both sides, in my case: eu1.cloud.thethings.network
I know that this kind information is a little bit technical, but all of them are inside of a LoRa-Alliance document called Regional Parameters this is the version 1.0.3: Regional Parameters 1.0.3