Hey Manuel, I sent you an email about getting it running.
But in summary, here are the commands you’ll need to issue to get onto TTN (without my //comments)
at+pn=1 // Set Public Network to true
at+njm=0 // Set Network Join Mode to manual
at+fsb=7 // Set Frequency Sub Band to whatever your Conduit is set to. Mine is 7
at+ack=0 // Turn off acknowledgements (not supported by TTN yet)
at+na=12345678 // Pick a number. This is the node address and should be unique for each node.
at+nk=0,2B7E151628AED2A6ABF7158809CF4F3C // Set Network Key for TTN
at+nsk=2B7E151628AED2A6ABF7158809CF4F3C // Set Network Session Key for TTN
at+dsk=2B7E151628AED2A6ABF7158809CF4F3C // Set Data Session Key for TTN.
Then issue:
at+join
at+send=HelloWorld