Thanks I’m using AT commands for now on E5 to clear the Lora communication issue first and I’m a little confused by your configuration ! Are you really using TTN V3 (known as TTS) ? as it looks like a configuration on TTN V2 (that will be shut down end of year). May you please confirm ?
I have done a quick check of your settings I can apply at my configuration and it’s similar out of App Session Key (APPSKEY) and DevAddr that you don’t use ?
Thanks again for your help
Vincèn