I need immidiate help

I have created a form using square payment for a donation drive I am doing until Christmas. I didn't realize I was only allowed one payment! I am fine to pay $20 for 30 days of service but I can not commit to a year or two year contract. Please, I have sent this form to many already. 

Hello,

You can easily downgrade you account anytime. I suggest that you downgrade before your reach your 30th day.

Here is a guide that may help you: https://www.jotform.com/help/341-How-to-Downgrade-Subscription-Back-to-Free-Account

Best Regards.