Facebook Widget - Recaptcha Getting "error For Site Owner: Invalid Site Key"


I am receiving the ERROR for site owner: Invalid site key when attempting to use the checkout through Facebook. The error does not occur on the regular site. I have tried adding facebook.com and www.facebook.com to the recaptcha domains with the same results. I've also ensured that I am using V2 and I've tried Invisible RECAPTCHA as well with the same error.

Any ideas?