If you look at the app reviews at the Google Play store (or wherever you got it from) you'll see that the reviews are AWFUL. It seems many people have problems like this. I do too. I will definitely not be renewing my subscription once the three months for free expires.
Tony
I've been using my remote start on my phone for about a month now, everytime I go somewhere to warm it up a little in this cold weather. I've had two instances where it wouldn't start and I quickly remembered I forgot to lock the car. Once I locked it using the app, the car started right up.