The Blynk WS Contrib only allows you to select virtual pins.
However, if you want to manipulate/query digital pins you can, using the “http request” node and an API call.
This will update Pin D2 (the built-in LED on a NodeMCU) with the value of “0”
(becauee the LED is Active LOW, “0” turns it on and “1” turns it off). You obviously have to put your Authcode in there.
You query it with:
http://blynk-cloud.com/Authcode/get/D2
Pete.