I have an Adeunis Field Test Device (FTD) registered operating on The Things Network (TTN).
I can see that it is connected and to TTN via the gateway and I can see its data on the TTN Console.
In answer to your first question re selecting Cayenne into the integration settings for the device, are you referring to doing so on the TTN Console? (I didn’t see, or missed that selection if it’s there in TTT? Or are you referring to some selection on the myDevices dashboard?)
Re your second question:
Here’s what I have on the TTN Console for the Adeunis FTD:
From the TTN Console:
The DevEUI for the FTD is:
00 18 B2 00 00 00 1A 8D
The AppEUI for the FTD is:
70 B3 D5 7E D0 00 AF
The Device Address is:
26 02 2A 62
I’m on west coast time too, if you want to go through this live via phone etc.
Basically, on TTN, you must tell it to forward the LoRa data to a specific Application Server. In this case, you want TTN to forward the data to Cayenne. The above instructions will walk you through it. Please give it a try & see if it works for you.