Reset Button to reconfigure wifi

Good day,

How can I see or change which pin is being used to reset the device to reconfigure the wifi.
By trial and error I figured out pin D8 is the pin on a Wemos D1 R1. But I now have same problem with a ESP32 board.

When you open up the blynk.edgent example… you will find a setting.h file there you can find the BUTTON_PIN defined. You can change that according to your need or know what pin has been defined.

Thank you, that answered my question and explains the problem I had.