@SKSJedi 

Thank you for the feedback, If smart light strip keeps goes offline, here are some tips that you could try 

• Please ensure Kasa device firmware and Kasa APP are both up to date
• Turn off Advanced Wi-Fi settings on the router like Band Steering (also called ‘Smart Connect’ or ‘Whole-Home Wi-Fi ‘), Wi-Fi Optimizing or ‘Channel optimization’ etc.

• When an issue occurs, does the smart device work in the local network?

  For a test, connect your mobile device to the home Wi-Fi network at that time and see if Tapo device is still accessible in the local network?

If smart device is still accessible in your home wifi network when issue occurs, it could be related to the DNS settings or router firewall settings, you could adjust DNS to 8.8.8.8 for router and adjust some firewall settings. 

For a test, try to connect your KL400L5 to a Guest Wifi network or mobile hotspot wifi and see if it could work stably. 

2. MAC address of the device

If still the same, can I know 1)  the model number Wi-Fi router and your network topology: e.g. ISP Spectrum-Archer C7 router<Wireless> smart device

2) MAC address of smart device ( please share via private message)

Hello   @SKSJedi 

Thank you for providing more case details, we created a support email TKID220621962 and escalate it to the seniors to look into that further, please check your email inbox. 

Feel free to let us know how it goes later, thank you!