The node’s log looks fine.
As nothing shows in the application/device’s Data page of TTN Console (make sure to have the browser open before sending any data), you need to look at the gateway’s Traffic page to see if anything is being received. It seems you do have a gateway, but it’s been inactive since January 4th?
{
"eui-b4e62dffff8e351d": {
...
"attributes": {
"brand": "ESP based",
"frequency_plan": "EU_863_870",
"model": "ESP32",
"placement": "indoor"
},
"last_seen": "2020-01-04T21:12:54Z"
}
}
Also, the description of the gateway above seems to suggest it’s ESP32 based, so probably is not a real gateway but a single-channel forwarder? Those are important details when asking for help… For such forwarder you would indeed need to limit your node to use the very same channel (and maybe even the same SF). But, again, such single-channel forwarder is not a proper gateway. If there are other TTN gateways in your neighborhood, then leave that ESP32 forwarder powered off and use those other gateway(s).
If you see that the node’s transmission has been received by one or more gateways, then maybe you’re running into the frame counter security. You could disable that for testing. Also check the keys and DevAddr, again.
(Please don’t post images for what is really just text. Hard to read on small screens, and hard to copy any text from an image.)