Packet Too Big Error

The latest firmware appears to be 1.2.1

I have no idea if that will help, and as always you upgrade at your own risk, but that’s where I’d start.

Actually, that’s not where I’d start. I’d start by ordering a NodeMCU or Wemos D1 Mini and consigning the Uno WiFi thingy to the junk box :open_mouth:

Pete.