Recent HTTP 421, Misdirected Request preventing execution

[txara]

This has been working great for months -- completing 2FA code entry is not needed just to find your device, to play a sound on a device

Now, about 1 week ago, it now seems to be issuing redirect requests.
Request is successfully reaching Apple reply is getting a redirect
trace shows numerous page requests until HTTP 421 is returned

Not sure if it's just me or if others are seeing this too, it's possible the SSL Certs from apple are not as expected. I also see this issue over time being reported from others.