EUI de dispositivo

I’m trying to get my WisGate OS2 device to receive telemetry from my RAK4630 and integrate it with ThingsBoard. I created a data converter and the integrations. The issue is that when I go to the WisGate interface, under the applications section, I add the following: Application type: unified, auto add device, generated the application key and application EUI, payload: cayenneLPP, Only forward data object, Base 64. I go to End devices, and nothing appears; I add an end device, and I don’t know how to generate the end device name. I got all this information from here:

Could someone help me?