How Do I Set 'Disable SSL Certificate Validation' to yes??

As I'm trying to configure JBFConnect, I was able to enable cURL and continue with the configuration process, but now I have the following error:

SSL Verification Failed. Set 'Disable SSL Certificate Validation' to Yes in the JFBConnect Configuration Facebook API Error: SSL certificate problem, verify that the CA cert is OK. Details: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed

How and where do I fix this?? I'd appreciate a step-by-step instruction since I'm new at all this stuff.

Thanks!

AirCounsel