To successfully install and use the X-Cart eBay Integration add-on, you need a working copy of X-Cart and an SSL certificate installed on your server. An SSL certificate is required because the add-on needs to establish a secure HTTPS connection to our service to get a token. Without an SSL certificate, such a connection will not be possible, so you will get an error saying that you have a problem with your SSL certificate; for example:
Apr 01 12:23:49 XLite [warning] Curl SSL certificate problem: certificate has expired (60).
You can obtain the add-on from X-Cart App Store.
After installing the add-on, you will need to configure it.