Can I have customers print tickets online after signing up for an event with Square and Jotform?

Our Rotary Club runs a number of events every year and we want to move to accepting credit cards using Square in person and on our website. Is there a way to print ticket templates after paying for them online?

We do not have any sort of application that will generate a ticket when the form is submitted.  You could use a unique ID widget to assign a unique ID to each submission:

https://widgets.jotform.com/widget/autoincrement

And modify the email sent to the users to resemble a ticket:

https://www.jotform.com/help/430-How-to-Edit-the-Email-Template-for-Notifications-and-Autoresponders