[Solved] App Preview or APK file app doesn't work

When I preview my app, tells me to check my blocks, although I have none, and even when I downloaded the app, it still didn’t work. It stopped working very suddenly. I used the drag and drop builder.

BTW I have an android

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Hey @1times94is942fjkz!
I could try to help you if you could send a screenshot a link to the project. Maybe there are some components wich android doesn’t support. Here is the list of unsupported components in Preview

I figured it out. It was the banner ad, and I didn’t have premium. Even though I removed it.