Help – Too Noisy Pro Review

I tried to contact the app support. I get an error page instead. I paid the 3.99 the first time. Then I needed an update, so I got charged again. Will I be charged every update? Overall, I really like the app. My students have responded well to it. I will continue to use the app for classroom behavior. Can someone let me know how the billing works. Thanks
Review by mrs. ht 1 on Too Noisy Pro.