"No texting while driving" not working

I worked on the "No texting while driving" app , but it is not working. what could be the reason ? I have done everything according to tutorial.

True, it's not working

**The No texting while driving tutorial is obsolete as it it appears in the literature.

** Have you looked at the advice provided here in No text while driving compiling not working ? It tells how to modify the original tutorial. You have to use a Companion version with a u in it. For example do not use Companion that downloads from Google Play. (2.62) to compile the app. Use Companion 2.62 u. The u version contains the SendMessageDirect Block required to make the tutorial work since Google required additional security precautions.

thank you so much. let me check it out