Just found out by 2-hrs of frustration that the ESP32-C3-Super-Mini won't connect to any WiFi channels higher than channel 6. I'm using it to send T/H/P readings via MQTT to Node-RED.
I suspect the reason is the physical size of the ceramic antenna labelled C3 in the photo above.
There do seem to be a number of people reporting wi-fi issues -
https://www.reddit.com/r/esp32/comments/1cu96tz/esp32_doesnt_like_wifi_channel_11/