Why I can't use the classic theme?

i cant use the classic theme, all theme I tried always the same, just the background change

i want to use this theme, exactly like this :

but when i use the theme , it become like this :

please help, i need the classic one

I tested the theme you provided:

But I'm not able to replicate an issue.

Are you seeing the theme differently applied to your form?

We'll wait for your response.

Thank you!

when i applied the theme , it's look like this:

I understand now, that is because your form is in our new layout where each field is represented on one page.

You can change that by following:

Let us know if you have any further questions.

Thank you!