Why when I publish my form, it changes the layout?

Please see attached images. 

I see what you mean, there is a gap on page 2: 

That happens because the fields aligned to the right do not have a label, and that creates the gap, please put a label on each of them:

Then inject this code if you want to hide the labels:  https://www.jotform.com/help/117-How-to-Inject-Custom-CSS-Codes 

#label_39,#label_44,#label_49,#label_56,#label_57,#label_82,#label_84,#label_87{

    visibility: hidden;

}

Result: https://form.jotformpro.com/72030795480961?jumpToPage=2