I’m confused – 30 Day Fitness - Home Workout Review

I decided that I was gonna start my free trial, but when I remembered I had nothing on my credit or debit, I didn’t fill out the card info. But i had already clicked confirm even though no card info was entered yet. Is it still gonna try to take money from my iTunes account? Because I’m trying to unsubscribe right now but I can’t get to the main page of the app because every time it opens it says”start your free trial, for a week free”
Review by smbto on 30 Day Fitness - Home Workout.