API Form Not Submitting Data


Our company uses an API form to capture the data customers put in on our website when placing an order (i.e. company, name, address, order amount etc.). Just in the past couple days the form has stopped receiving this information. Our website is working fine and customers can place order like usual.
We were wondering if the version of javascript we are running is outdated or if it changed if that could effect this? Or any other ideas why this just stopped working. We received 400 error in the backend of our website this is how we noticed the problem.