L530B smart bulb stuck at "Tapo is looking for your Tapo device"
I am trying to set up a new Tapo L530B smart bulb. I plugged it in, and it flashed 3 times. I opened the Tapo app, and added it as a device. I was prompted to connect to the light's wifi network, which I did. I was then taken to a screen which says "Tapo is looking for your Tapo device". That message stays on screen for an extended period, and then I get a screen saying "Unable to find this Tapo device".
I have tried this on 2 phones - a Samsung Galaxy A54 and a Motorola Moto G 5G Plus. I get the same problem with both. I have other Tapo devices (smart power sockets) which are working fine in the app.
How can I fix this?