App malfunctions

Recently updated my iPhone to latest version (10.2.1). Tried using this on a trip as my main alarm and the time is off around 15 min or and can not figure out why or how to fix. 2nd day set two alarms, 1st at 5:45am with music selections --never heard that go off, and 2nd alarm at 6:15am with the tone Disco. When selecting the tone I remember coming across the buzzer tone and specifically chose the Disco instead. In AM if 2nd day, I was rudely woken up a buzzer at 6:00am! Looked back in app and alarm settings to see if I messed up something and it all set as I said. So I updated the app. When opened to test it and reset alarm that had music, it went off with the buzzer at the appropriate time; however, when the app is open now it automatically takes me to the App Store to some random app (presumably the app in the ad section at bottom of app). Frustrated and ready to ditch this app! Never good idea to mess with my sleep but worse to mess with my sleep on a business trip! Only giving 1 star cuz u have to choose something and no stars wasnt option.

Joyojoco about iHome+Sleep, the alarm clock app from the experts on alarm clocks, v3.0.7