My game works only for about 1.5 seconds?

I was trying to make an endless game.So the player should stay it's place and all of the other objects should move.

But when I press play, the game works correctly only for 1-2 seconds.Than the game does not response my mouse buttons.

I couldn't find what causes this problem.

Here's the capx : https://drive.google.com/file/d/1i3LvFUswOWc9-x6W0we4Z4JJt0I5mnuj/view?usp=sharing

Thanks

You are using "Trigger once" wrong. Also you don't need all those "Pick all" events. Change your code like this:

Thank you so much!

dop2000