@ricktick,

This results from them no longer being able to see or connect to the network they are expecting. You may consider setting your new Wi-Fi to use the same name and password as your previous router, or configuring an IoT network with the old credentials, however, you will likely need to reconfigure the devices' wireless connections. The devices that you listed all have soft resets that can be performed via holding the power for 5 seconds as compared to 10 for the factory reset.

A soft reset will save the device settings, such as the name and schedules, but it will allow you to go through the setup process and connect the device to your new Wi-Fi.

I would recommend checking out this community thread: https://community.tp-link.com/us/smart-home/forum/topic/560376