I'm using osCommerce Online Merchant v2.3.4 and am tring to install PayPal App v5.0.18. I've installed it, but I'm getting errors when I try to configure it for the PayPal Sandbox so that I can start testing it. I've successfully used the Retrieve Sandbox Credentials button to set up the configuration, but when I click the Test Connection button (under Configure), I get the following error report:
cURL Version: 7.55.1
cURL SSL Version: OpenSSL/1.0.2k
Default Setting: Failed
TLS v1.2: Failed
A connection to PayPal could not be made using TLS v1.2. Please consult with your hosting provider to upgrade the cURL version that is installed with your PHP web server to support TLS v1.2 connections.
This must be performed by June 30, 2017 otherwise connections will continue to fail.
I've contacted the site's costing company and they have transferred the site to a server that has the cURL version compatable with TLS v1.2. When this still didn't resolve the problem, they have confirmed that it is running on the correct server and advised that I contact osCommerce for further assistance.
Can anyone suggest other actions to try?