TTN is LoRaWAN not Lora, so you’ll need to put on moteino LoRaWAN stack such as LMIC.
You may also use search engine, googling “ttn moteino” gives you 1st response on this forum post.
https://www.thethingsnetwork.org/forum/t/moteino-or-moteino-mega-for-lorawan-node/5381
BTW all is explained here