The problem for me isn’t figuring out the host, that’s easily found by IP address. The problem is understanding why. They are all just standard browsers or iOS apps which I regularly use to access hass and it’s never related to mis-entering passwords on my part. All the passwords have been cached and working correctly for months. So it’s something internal that’s broken.
We need to get a good error message for this and get to the bottom of what’s going on or just turn it off, because after 2 years of getting these useless messages daily I’m pretty tired of it and I simply don’t use the notifications any more because I just assume that that’s all that’s there (so I miss important ones about expired tokens).