I have two Chromecasts with Google TV 4K, same on the same versions as far as I can tell, and I bought them at the same time a few years ago.
One used to be part of the Speakergroup and then it dropped. Now it's not an option anymore. The other one remains just fine, and I can't figure out why.
Here's the version info:
4.9.269
STTE.240315.002.11695351
Could it be a storage issue? One difference is the one that is not an option to add anymore has a lot more apps as I use it more.
