We don’t know that - we just see what you posted - and most technical forums want context and links to the actual product & resources - leaving them out just makes it look like you are hoping for a quick win.
As we still don’t have any LoRaWAN context on here and given that @stevencellist, THE Heltec expert and myself (his minion) will pick this up on the Heltec forum, closing. I will post the solution here once it’s been unravelled.