No worries about asking for help for as long as necessary to resolve all of the issues. When it comes to notifications I'd try following entries from the troubleshooting guide:
Following the Successful Setup
I started receiving multiple false open/closed state notifications
Please check that the laser is still pointed at the center of the reflective tag when door is fully closed. Verify that the laser and photo-sensor openings are free of webs or other obstructions and the release rope is not in the way. Check the reflection rate in the settings and make sure it is higher than the threshold by at least 10-20. Decrease the threshold setting if necessary. Default threshold setting is 15, confident reflection values are 50+.
I'm receiving multiple false open/closed door state notifications during the day, but never at night
Bright ambient light conditions in your garage may degrade Garadget's sensor sensitivity. Take note of the reflection rate reported by the app while this happens and set the threshold value at half of that value. See troubleshooting for "Device is not reporting the closed state" above for improving the reflection rate if it's too low.