If your ASUS ZenWiFi node is blinking blue, it could indicate various issues. Restart the node by unplugging it and plugging it back in after a minute. Check for firmware updates and install the latest version. Ensure the nodes are within range and not obstructed. Reset the node by pressing the reset button for 5-10 seconds. The blinking blue light on your ASUS ZenWiFi node typically indicates that the node is trying to establish a connection with the primary router or another node. It could also mean that the node is experiencing a temporary issue or is in the process of updating its firmware. ASUS recommends placing the nodes within 30 feet (9 meters) of each other for optimal performance. If the nodes are too far apart, move them closer together and check if the blinking blue light issue resolves. Sometimes, a simple restart can fix minor glitches and connectivity issues. To restart the node, press and hold the power button for a few seconds until the lights go off, then release the button and wait for the node to reboot.