We only support
webhook_uri via https protocol due to internal security measures.This is the full regex pattern your webhook URI should match:
https:\/\/[a-zA-Z0-9@:%._\-\+~#=]{2,256}\.[a-z]{2,6}\b([-a-zA-Z0-9@:%_\-\+.~#?&\/\/=]*)More info
For more information on Async requests and webhook_uri have a look at our Documentation.