For a group project I was trying to use the Arduino BLE to connect to my computer, which would be connected to a website that would then return an appropriate value to the Arduino BLE. The issue occurs after connecting to the BLE, because my website showed basically no signs of responding to my BLE’s messages at all. After a bit of testing and logging, I found that the issue was that I was using an eventListener in my javascript to detect whenever the BLE sends a message, but that whenever that message was sent, it does not detect anything because the SerialCharacteristic does not change.