hey there,
Thanks for temporary disable that IP address restrictions, I found out you hitting this following error :
SSL certificate problem, verify that the CA cert is OK. Details: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed
If you would like to fix this, I would suggest you pass this reference link to your webhosting
http://stackoverflow.com/questions/6400300/https-and-ssl3-get-server-certificatecertificate-verify-failed-ca-is-ok
It seems like your server still using the old CA certs and it will reject all SSL certificates as unverifiable when connect to CURL.
By the way, I have temporary added this following code into this file
JoomlaFolder\administrator\components\com_easyblog\includes\captcha\adapters\recaptcha.php :
// LINE 106
curl_setopt($rCURL, CURLOPT_SSL_VERIFYPEER, false);
So it will not use SSL VERIFYPEER before submit the comment, it should work fine now.