Thanks - just tried again, it is on the base and I must have clicked the link within 1 or 2 seconds but exactly the same issue. Looking at it - it looks like an IPv6 address. Home Assistant is running on a docker with only IP4 - could this be the issue?
Eve Flare is a Minimal Thread Device (MTD) – but what does that mean?
The current version of Eve Flare supports Thread. This technology makes your smart home network more responsive, robust, and increases its reach – the only other thing you need is a is a home hub (Thread border router). Battery-operated Thread accessories, such as Eve Flare, represent endpoints in your Thread network.
Does this mean I have to have thread setup in HA to use it?