I was getting the 3 flashing red lights (along with green stream while charging) on my wall connector. I called the support line (510-249-2490, option 2). They pushed a firmware update to it. It is now 1.4.4 and it looks like the interface changed a little. I held the button down for several seconds to put it back in broadcast SSID mode and connected to it. The Installation box was red, I went into it and selected United States (amperage was still configured). I noticed another field "Access Controls" that I hadn't seen before. In it you can select "All Vehicles" and "Only Tesla". I guess that is for the Destination Charger crowd. Not sure if the new FW will fix my problem. I'll try charging later tonight when the SOC is a little lower to give it plenty of time "overheat".
New FW didn't make a difference. Called them back today and they are sending a replacement (everything but the back plate) for me to swap out and then send the old one back.