We are continuing to secure the data of eBay's sellers and buyers, eBay data, and eBay developer information is ending support for HTTP endpoints that are part of Finding API Finding API on October 1 January, 2019. The mentions of HTTP endpoints are deleted from the documents on the developer's website.
Starting on October 1, 2019, the eBay Finding API will work over HTTPS only (e.g., https://svcs.ebay.com/services/search/FindingService/v1). All requests made through HTTP are not able to be processed.
Prior to updating your application to make use of the official HTTPS endpoints, make sure you check these:
Make sure your hosting provider or platform has HTTPS support.
Check the HTTPS connection
The need to utilize HTTPS only applies to both production and sandbox environments. Both of them support HTTPS and HTTPS currently. Therefore, either could be used to test.
We thank you for your assistance by ensuring eBay is secure and reliable marketplace. eBay customer service , eBay help