Hi @Rhonna
Ok sorry, please can you check the instructions below:
Setting up your eero | Full Fibre | TalkTalk Help & Support
On rare occasions, the eero app might not pick up your eero device, even if it's turned on and appears to be working. When this happens, you may need to manually add the eero to your network. To complete this step, you'll first need the serial number from the eero - you can find this on the sticker on the bottom of your eero (usually below the barcode), or on the box your eero came in.
If you're setting up your eero network for the first time:
- When you get to the Looking for eero devices screen in the app, select Set up Using a Serial Number
- On the next screen, enter the serial number from your eero device and press Next
If you've set up your eero network already and you're having troubles adding an additional eero device, then please follow the instructions below:
- Select the + Button at the top of the eero app
- Select Add or Replace eero Devices
- Select Add eero Device
- Plug in your new eero hub, then select the arrow button
- If the eero network does not find your new eero, select Set up Using a Serial Number
- On the next screen, enter the serial number from your eero device and press Next
