I was trying to hock up MKR1000 with ENV shield along with Blynk. unfortuantlly there were no much details about it. it could be done with IOT arduino but there I could just use IOT for just 4 sensors.
Important things :1 - values on Blynk should be virtual and interval should be set to push.
2- if you missed with the code it may not work :)