Cannot see the AirMonitor_xxxx network- Make sure the sensor is receiving power by checking that the power outlet is working and the power supply is securely connected to the power outlet and sensor then check for a dim red glow underneath the sensor housing.- If the sensor is in range of a WiFi network it was previously configured to you will need to turn off that WiFi network or take the sensor out of range of that WiFi network to make the AirMonitor_xxxx network visible again.Cannot connect to AirMonitor_xxxx network- Sometimes computers, tablets, or smartphones will not connect to the AirMonitor_xxxx because this network does not reach the internet. This is a security feature on some devices. If a pop-up alert appears you may need to select trust the network or "connect anyways to the network, or repeat attempts to connect to the AirMonitor_xxxx on the same device.WiFi network name is incomplete or not on the list after clicking "Connect to Sensor"- Make sure your PurpleAir sensor is near the wireless router to ensure the sensor is within range of the WiFi network.- PurpleAir sensors can only be configured to 2.4GHz networks. Any other networks will not be visible.- If the WiFi network name contains an apostrophe (Example: John's WiFi) you will need to manually configure your sensor to the WiFi network.Sensor will not connect to the WiFi or is not showing up on the PurpleAir map- PurpleAir sensors must be configured to a WiFi network and registered to be visible on the PurpleAir map. Make sure your sensor was successfully registered.- PurpleAir sensors work on WPA2 Pre-Shared Key networks. If there is any kind of secondary authentication (like clicking on a button in a web page) to connect to the WiFi network, the sensor would need to be whitelisted on the router.- Check the password for 2.4GHz WiFi network by logging in to the router to double check your password for your 2.4GHz WiFi network.