I have a KP303 smart powerboard. Once it is setup and linked to the cloud account / kasa app I am able to remotely control the outlets.

This works from the kasa app with the phone connected to the same wifi network as the KP303, and the phone disconnected from the wifi and using cellular data.

Without fail however this only lasts a short time before the individual outlets are grayed out in the app, and clicking them displays an error: "Device unreachable. Your device may be powered off or out of network range" when the phone is not on the wifi.

If I connect the phone to the wifi network, then I can control the outlets, but they all say "Local Only"

When reachable, the app device info page indicates -57dBm signal strength to the Access point.

Throughout the entire time, a computer on the same network as the KP303 is able to continually ping the powerboard...

Firmware is up to date.

Turning off, then on again briefly resolves the issue.

Any ideas here? really defeats the purpose of the device if I cannot control it remotely.