Cannot Connect Blynk-cloud in Blynk App

When posting code here please follow the guidelines in the Welcome Topic… I edited your post to show how it is done.

Blynk%20-%20FTFC

You code, particularly the void loop() is NOT Blynk friendly… here is a document about that.

http://help.blynk.cc/getting-started-library-auth-token-code-examples/blynk-basics/keep-your-void-loop-clean

Then look at the link I already provided above (the green word ultrasonic) that shows how others learned to use an ultrasonic sensor with Blynk effectively.