Amazon Smart Plug Device Is Unresponsive — How to Fix

What it means

Amazon Smart Plug 'Device is unresponsive' is the status the Alexa app shows when it can't currently reach the plug.
Alexa's exact wording: 'Sorry, [device name] isn't responding.'
The plug is offline on the Alexa cloud side — either because it lost Wi-Fi, the router rebooted recently, or the plug needs to be re-added after a network change.
Amazon's official guidance is to power-cycle the plug, confirm it's on 2.4GHz Wi-Fi, and remove and re-add the plug in the Alexa app if cycling doesn't help.

Affected Models

Amazon Smart Plug (the official Amazon-branded plug, model number C2YS9R or similar)
Affects every region where the Amazon Smart Plug is sold (US, UK, Germany, India)
Status appears in the Alexa app on iOS and Android identically
Does NOT apply to third-party plugs that work through Alexa via a different skill — those show different unresponsive messages
Most common cause is router or Wi-Fi change since the plug was first set up

Common Causes

Wi-Fi outage or router reboot since the plug last connected
Router changed (new ISP, new router model) and the plug is still trying to reach the old SSID
Plug lost connection because of a 2.4GHz / 5GHz reshuffle on the router (band steering)
Alexa cloud temporarily can't reach the plug (cloud-side hiccup; clears on its own)
Plug needs a factory reset because the Wi-Fi credentials are stale

How to Fix It

Power-cycle the plug.

Unplug the Amazon Smart Plug from the wall outlet.
Wait 10 seconds.
Plug it back in.
Wait 60 seconds for the plug to rejoin Wi-Fi — the LED should go from blinking blue to solid blue.
Open the Alexa app and pull-to-refresh on the Devices screen.
If the unresponsive status clears, you're done.
Confirm the plug is on 2.4GHz Wi-Fi.

Amazon Smart Plugs are 2.4GHz-only.
If your home Wi-Fi was changed to 5GHz-only, or band steering merged the bands without 2.4GHz available, the plug can't rejoin.
Check your router settings — make sure 2.4GHz is broadcast and accessible to the plug.
Remove the plug from the Alexa app.

Open Alexa > Devices > Plugs (or All Devices) > tap your plug > tap the trash icon to delete.
Confirm.
The plug is now gone from your Alexa account.
The plug itself stays plugged in — you'll re-add it in the next step.
Re-add the plug as a new device.

In Alexa, tap + > Add Device > Plug > Amazon > follow the setup flow.
Alexa discovers the plug if its LED is blinking blue (the plug enters setup mode automatically on power-up if it can't find a saved Wi-Fi network).
Pick your 2.4GHz Wi-Fi from the list and enter the password.
Setup typically completes in 1-2 minutes.
Factory-reset the plug if re-add fails.

If the plug doesn't appear in setup mode after a power-cycle, press and hold the button on the side of the plug for 12 seconds until the LED goes red.
Release.
Wait for the LED to start blinking blue — that's setup mode.
Now re-add the plug in the Alexa app from scratch.
This wipes any stale Wi-Fi credentials inside the plug.
Contact Amazon support if a factory-reset plug still won't set up.

If the plug doesn't enter setup mode after a 12-second hold, or it enters setup but the Alexa app can't complete the join, the plug's Wi-Fi radio may have failed.
Open the Alexa app > Help > Get Help With Device > follow the prompts for replacement.
Amazon Smart Plugs have a 1-year warranty by default.

When to Call a Professional

Unresponsive on an Amazon Smart Plug doesn't need warranty service in almost every case.
If a power-cycle and a remove-and-re-add both fail, the plug needs a factory reset (12-second button hold) and a fresh setup as a brand-new device.
Only if a factory-reset plug still can't be set up does Amazon support get involved — typically the plug is replaced under warranty.

Frequently Asked Questions

Voice commands say 'isn't responding' but the plug still works on its schedule — what's going on?

That's a common state and it's a good sign — the plug's local schedule is stored on the plug itself, so it runs even when the cloud has lost touch with it.
Alexa reports 'isn't responding' because its cloud-to-plug connection is broken even though the plug's local logic is fine.
The fixes on this page reconnect the cloud side.
Once cloud control is back, voice commands work again AND the schedule keeps working — both at the same time, not one or the other.
If you only care about the schedule and never use voice control, you can technically ignore the unresponsive status.