Why does reCAPTCHA send customers back to the cart during guest checkout?

My team and I have a store on your platform and are experiencing issues without guest checkout. When checkout as a guest is chosen, our users are presented with a reCAPTCHA. When the reCAPTCHA is completed successfully our users are then sent back to the cart instead of forward towards the payment process. This is a massive issue for not only us but our customers. I am hoping anyone can reach out and help resolve this issue.