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There are many jotforms in your account. Could you please tell us which one is with this issue?
Also I did take a look at one of your jotforms ( http://www.jotformpro.com/form/42993532464967 ) and I saw that the radio buttons are in one line.
Can you please give us more details such as what fields and on what jotform.
It would also be good to know what browser you are using to preview the website.