I have exactly the same problem. My wixStores_onNewOrder() is not fired. What do you mean with “try to export again the event from the property panel”? This is my 1st day with wix and somehow I am lost.
I have this post https://www.wix.com/velo/forum/coding-with-velo/wixstores-onneworder-not-fired - can you please help. I have no clue why the url is not called.
Thank you!