was working perfectly just stopped

Hello, I loved this plug-in has been working for about 6 months no problems. Then just today was informed by a customer clicks on the “I Accept” and then takes them back to checkout page and they click on “Place Order” that would take them to pay page from Authorize.net it gives error “you must agree to our terms and conditions page” So it seems it is not acknowledging that they have click on the “I Accept” button. I have not installed any new plug-ins that might conflict and I have deactivated and reactivated it. What would you need from me further to help solve this problem. I hope you can help me because I don’t like the default WooCommerce terms and conditions because it opens a new page (using WooCommerce 3.0.0). Thank you.