Report the color of the status light on the cameras after they are powered up.
Use a smart phone or computer with 5.8 GHz WiFi capability to see if the cameras show up. The SSID they broadcast should end with the last 6 digits of the MAC address on their label.
You should also go into pad mode on the ST-16, swipe down from the top right, enable WiFi and see if your ST-16 will connect to your home WiFi to be sure WiFi is working on the ST-16.