For both of you, please post the URL to your site ... I'm specifically interested in visiting the your_site.com/extras/curltester.php?paypal=1 page to see what results it gives there.
And then make the same CURLOPT_SSLVERSION change there (comment it out), and look at the output again.
I've seen reports of 1 hosting company whose server configuration is bad and it can't autonegotiate a compatible SSL version, and in that case one must be specifically set ... in which case uncommenting the CURLOPT_SSLVERSION line is necessary, and instead of setting it to 3, set it to 4 or 5 or 6, testing each choice using curltester.php ... then once a working option is found for your server, make the same change to paypal_curl.php ... and then make note that your hosting company does things weird ;)




