Hello, I am using the heltec htcc-ab02 board to send data to ttn, I have connected two sensors max102 (measures heart rate and blood oxygen) and scd30 (measures temperature, humidity and c02). My problem is that after a certain time, approximately 30 minutes, the board stops sending data and it is no longer uploaded to the ttn. Could someone help me with that. The code I am using is the one that appears on the following page: https://github.com/HelTecAutomation/CubeCell-Arduino/blob/master/libraries/LoRa/examples/LoRaWAN/LoRaWan/LoRaWan.ino