My application was approved and I have access to the API now.
However, when I try to register a webhook, I get the following error:
{“errors”:[{“code”:214,“message”:“Webhook URL does not meet the requirements. In
valid CRC token or json response format.”}]}
My webhook is a clone of https://github.com/twitterdev/twitter-webhook-boilerplate-node/ . So, I don´t think there is a problem related to the json response format or the response_token.
My webhook is deployed in Heroku and the latency is not a problem; it is working super fast.
Help is appreciated.