Platform Notifications (Selling Order) has not been working since mid-July 2020. Two months ago, We bought the HTTPS service and adjusted the webserver callback address from HTTP to HTTPS. The port was open and not block ebay.com.au to access it. But it's still not working.
I called the set notifications API(return success) to set it again, and I called the get-notifications API, but the result is empty in the EventProperty list. How can I do the next step? Thanks a lot.