Payment fields arent working at check out

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I need help! people are trying to purchase, but can’t add their payment information. I wonder how long this hasnt been working. Let me know if you see any issues! Thanks

https://preview.webflow.com/preview/kk-canvases?utm_medium=preview_link&utm_source=designer&utm_content=kk-canvases&preview=b15fb4a85a18f16593cd6953f1657b3a&pageId=6579fd9f4fc94843eac1536b&workflow=preview