I haven’t seen quite this, but I did have one (of 6) Ring Extender v2 stop responding on power events. It finally was fixed after I pushed the button, which started the light flashing, and a refresh got things working again.
To work around this, my power fail routine has voting, and only decides there has been a power fail if 3 of the Ring Extenders v2 show power fail. Concurrency issues (power flapping up and down by the utility during fail) made the design of the interacting rules a bit tricky. So, failure of any single Ring Extender does not signal power fail, nor prevent power fail detection.
Another issue is that the built-in driver had a broken refresh (necessary on power return because the Ring regains power before the hub reboots, causing the “return to mains” event to be lost), or at least it did about a year or so ago. Denny Page’s (@dennypage’s) driver, which I now use, doesn’t have the broken refresh issue.
One thing I noticed about the extender (and the outdoor contact sensors) is that they don't quite work right unless paired through the qr code method with s2 enabled. The ring stuff is the only stuff I have paired with security.
ok old one definately bad the light on the button doesnt light up when i push it and still not showing power outage without a refresh.. the new one joined and is working fine.
the old one still is online and works with range tests both on battery and power but becuase the button seems to not BE WORKING i cannot exclude it.. any ideas.