If the Tapo L900-5 shows offline in the Tapo app, work through these checks.

What This Problem Means

The Tapo L900-5 has lost its connection to your Wi-Fi or to Tapo’s cloud.

Common Symptoms

• Offline in the Tapo app
• Voice commands stop working
• Schedules still run but the app cannot reach it

Safe Checks You Can Try

1. Check it has power

Check the strip’s adapter is plugged in and switched on.

2. Restart the router

Reboot the router and wait for it to come back.

3. Check the 2.4GHz band

Tapo says its smart devices only use 2.4GHz Wi-Fi. If you changed router settings, check 2.4GHz is still on.

4. Check the router limits

Tapo says some routers limit how many devices can connect, especially on guest networks.

5. If it only works on your home Wi-Fi

Tapo’s plug setup guide says a device that shows “Local Only” may need the router’s DNS set to 8.8.8.8 and 8.8.4.4.

6. Soft reset it

Tapo’s light strip reset guide says to hold the controller button for 5 to 10 seconds for a soft reset (it animates orange and green).

When To Contact Support

If none of these checks fix it, contact Tapo support through TP-Link’s UK support site, with the model and hardware version from the label on the device.