TTN and Cayenne integration (MKR1300)

Hello, we’re working on a project using LoRa’s technology. We have successfully sent a message to TTN, but now we are stuck on reading this information in an application, like Cayenne. We don’t know what to modify on our Arduino code to read, send it to Cayenne, and be able to read it. We have checked a lot of information but unfortunately, we didn’t find one that works with our card (mkr 1300) and our gateway (Kerlink iFemtoCell). Do you have any advice?

Thank you

you need to send data in cayenne LPP format so that it is decoded on the cayenne platform. Cayenne Docs
Are using TTN v3? it is not yet supported on cayenne.