Problem using physical 4 buttons using Nodemcu esp8266 to switch relays

[PeteKnight]

Is the IP address that you’re using the one that you get when you ping blynk-cloud.com?

You’re better-off using GET rather than PUT. See this example:

Help with IFTTT and Blynk

The syntax for GET and PUT are slightly different. This is an example for someone in a different part of the world (hence the different IP address): [image] If doing it this way doesn’t work then appending “:8080” to the end of the IP address would be worth trying. Also note that you’re using https and the example uses http. Pete.

Pete.