You have two options. You can repeat the pairing procedure for each device (download the instruction leaflet) and set schedules and smart automations again. It is easy but time-consuming for many Wi-Fi devices. Or, set the new router to have the exact same SSID (Wi-Fi name) and password as your previous router. The latter requires some knowledge of your router settings but will allow all your existing Wi-Fi devices to seamlessly transfer to the new router.
Yes, the same Wi-Fi connection is required to pair. All Wi-Fi extenders should be unplugged during the pairing process. After pairing is complete, the smartphone can use any internet connection (3G, LTE, Wi-Fi) to operate the app functions.
Astute Devices only have 1 switching channel, it can, however, connect multiple appliances, but will only switch as 1 unit. If for example a geyser and pool pump are connected to the same ASC, both will switch ON and OFF simultaneously. The CBI Home App can service multiple Astute devices. If you wish to control multiple devices independently, install multiple Astute Devices.
Ensure when setting up the schedule that you select all the days of the week you would like to have device operate. If "repeat" is not set in the timer schedule screen, the action is only performed once.