Lost WiFi connection to Glowstick

I had an issue with my broadband router, requiring it to be reset.

Now, mu Glowstick can't connect to the house WiFi, as it keeps trying to connect to a WiFi named "Glow-17f7C0"

It keeps trying, but gives the response "Unable to join the network "Glow-17F7C0"

It asks "Bright" Wants to Join Wi-Fi Network "Glow-17F7C0"? Join just repeats the issue.

The WiFi indicator on the Glowstick is flashing green.

I've unplugged and re-plugged the glowstick, but the error remains.

Is there a .pdf somewhere showing the detail steps required for re-connecting?

Thanks, anyone who can help...

Jim