Not sure what you're talking about... working fine in my Garden Project.
Blynk works with everything.
A fix for your issue is as simple as removing those broken libs and putting in two lines:
int moistureSensor = analogRead(A0);
moistureSensor = map(moistureSensor, 0, 1023, 0, 100); // output 0-100%
Take a look at project Garduino to see the code in action (in Sensor)