Gen 1 Wi-Fi Controller (2019): Won’t Stay Connected, Drops to Slow Blink

My Gen 1 Wi-Fi controller has worked flawlessly since 2019, but recently it refuses to stay connected.
  • After reset: fast blink for pairing.
  • Sometimes bails after ~10 sec back to slow blink.
  • Sometimes stays fast blinking but app spins/times out.
  • Rarely connects, but drops to slow blink within minutes.
I’ve tried re-pairing dozens of times, 2.4 GHz WPA2 only, strong signal, no client isolation, multiple reset methods.

Once this morning I got it connected, but the app only showed stale data while the smoker slow-blinked (no Wi-Fi).

Has anyone else seen this after years of perfect service? Known fix or is the module dying? Really hoping to avoid $420 for a new controller.
 
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