I have setup a valid postback URL (https) on the cloud. When i try to update the app postback url section, i get the following error: The postback url could not be reached. Please make sure the port is 80 or 443
I am able to reach this URL via postman... Can you tell me what the issue is ?
Secondly, I'm an individual user trying to place an order via the API, do i require the postback URL ? Or will the websocket suffice ?