Hi @Shaitjema, you have one of The Things UNOs, right? You can try with this https://github.com/gonzalocasas/thethings-uno/
But yeah, there's not much to setup tbh.
Perhaps you need to use one of the DEBUG_ options (or uncomment the JSON Up lines) in the poly_packet_fwd and recompile, and see if you can get more details about what's wrong...