SP20 Tasmota Possible Brick

Hello,

I have multiple Teckin SP20 smart-plugs that I have flashed with Tasmota. They’ve been working great for about 6 months. Yesterday I restarted home-assistant and two of them didn’t come back online. The devices don’t connect to wifi and there’s no local control anymore by pressing the button. I originally used Tuya-convert to flash the devices, and had about a 70% success rate. The failed devices would not broadcast or connect to any AP, the original app, or respond to local control. The led would flash orange every 3 seconds or so. This device that has been working is now doing the same thing. Any ideas?
Tasmota firmware 6.4.1.19 (sonoff-basic.bin, not custom compiled)
Teckin SP20
HomeAssistant 0.100.1