App not working when changing screens (Sound Sensor)

Hello everyone, I am new at the community.

A few days ago, I started developping an app, and it’s “kinda” finished. But I have 1 issue.

The issue, is that in my phone the app works great (I have a Samsung S9+), but in my friends phones it doesn’t work. After changing options in the screen Options, the main screen stays white.

I already tested with the two methods in the link below to change between screens, and results the same way.

Thanks !

if you use a variation of the Triblehunter method of switching screens, then the OtherScreenClosed event never will fire… that event only fires while using the manager screen method