Mobile web testing

I am working on automating the mobile web testing. I am facing an issue regarding pop up. While doing manual testing i am clicking on a button and as a result of that i am able to see a pop u[p on the screen , same thing is not happening while doing automation , Katalon is telling that clicking on the button is success but i am not able to see the pop up. This screenshot is the result of manual testing. Terms and condition pop up is not coming while performing automation.

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