eBay will add Server Name Indication (SNI) support, the HTTPS-only standard, to our production Platform Notifications server. The release date will be announced later.
If you use or plan to use HTTPS for your Platform Notification delivery URL (i.e., your server uses HTTP over SSL or HTTP Secure), we recommend strongly that you test your Platform Notifications feature in the sandbox environment and verify that you are able to receive notifications over HTTPS.
If no platform notifications are delivered to your notification delivery HTTPS URL, please refer the Not receiving platform notifications over HTTPS knowledge base article for instructions on how to resolve the problem.
Please contact eBay Developer Support if you need any assistance.