The definitive solution was “don’t bother”… as is similar in a few other topics about these type of “me too” shields for adding WiFi to the Arduino.
But now, and one main reason to keep these old posts from being revived, at least without clarification of their potential irrelevance from the current Blynk operational point of view, is they are not worth the effort when a Wemos D1 Mini can be had for the cost of a cup of coffee… and just simply works 
Try one instead… you and your students will appreciate that lack of unnecessary hoop jumping 