Okay, it's not really mine, but someone I know recently got a Google Home Mini and at first it worked fine. Then a day or two later it started refusing to do anything, saying something to the effect of "Sorry, I can't play music while content filters are enabled."
The owner and I both looked through the Google Home settings and saw that no content filters were enabled. We managed to get it working again by actually setting up the content filters and setting them to "can play anything." Then a few days later, it started refusing to do anything again, giving the same excuse about content filters. Somehow we got it working again, maybe by disabling the content filters, but once again only for a couple of days and now it's refusing to do anything again, saying that content filters are enabled and preventing it from playing music.
I'm exaggerating a little. When I say it is refusing to do anything, it probably would still answer questions asked of it. But it refuses to play music, and that's the primary reason it was obtained (it came free with a Spotify subscription).
I've tried searching for a solution, but the only results I seem to get are help pages telling me how to enable content filters. We don't want content filters or restrictions of any kind. We just want music! My search results are not showing any forum posts by others experiencing similar issues and troubleshooting steps to resolve the issue.
So how do we get the thing to realize that there are no content filters enabled, and just play music when people ask it to?