Notifier object not working on Android tablet on version 2.57b but working fine on Android emulator

Hello, I’m tutoring someone with an AP project and we have run into a problem -
When they are testing their code on their tablet the notifier object they programmed does not respond whatsoever when the event comes up. I tested the same code on my PC (I don’t own an Android device) with the aiStarter emulator and it worked just fine.
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Thank you for any help in advance, and I’m happy to answer more questions if necessary.

Update the companion ?

If the sprite in question continues to collide with something, the event may be firing multiple times, so what you’re seeing is a stack of notifier messages one on top of another. Try adding a global variable to track whether you’ve gotten here before, and only show the notifier if the variable is false, and set the variable to true. That will eliminate a potential confounder.

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Like this? I’m having them try it out on their tablet.