iPad screen UI is distorted

I’m developing an simple app runs on iPhone only.
But Thunkable seems to build ‘universal’ app only that runs both on iPhones and iPads.
( iOS app only for iPhone not iPad please - Thunkable Discuss - Community)

The problem is that the vertical coordinates seemed to be distorted on iPads like the screenshots below.
It seems to have quite relative coordinate system over different screen ratios.
So the UI components are placed overlaid on iPad screen even though I set enough vertical spaces between all UI components.

I think this app will be rejected from Apple appstore because of this problem. So I want to remove iPad build from the ‘universal’ build or fix this coordinate problem.

Please tell me the solution.

iPhone screenshot

iPad screenshot