Square Payment Integration: forgot to turn off sandbox mode, and received 6 submissions, is there a way to process those payments?

 I have a form IJC Winter Cup 2018 Registration Form

There are six transactions on it, but the sandbox mode was turned on.  How can I actually get those transactions go through to Square?

It is not possible to process transactions that were made in sandbox mode. You will need to ask your users to submit a new form.