If upon submission of your form your user generates an invoice stating "Free" order when they should have generated a balance owing, it is most likely that we were unable to find the currency in the correct format in your form questions.
Check these points in your setup
Make sure you have money amounts formatted correctly "{Item Label} - {money amount}" in the answers people choose.
Do not put money symbols or dollar amounts in question titles (click here for our article on using question descriptions to describe money amounts in your form without including them in the invoice total).
Click the "Add Sample Payments Section" in the Payable sidebar, this will insert a variety of example questions that demonstrate how to format money questions
Look at how the Money amounts are formatted. Sometimes depending on your Country and Currency Combination, it may be expecting a country code on dollar usage (ex: US$8.99).
Copy the format that you used in the samples, and then delete the sample section.
You may need to update your locale settings if the suggested format does not match your expectation.
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