Twitter will no longer approve developer account application

The way to do it is to authenticate each user to a single application, using https://developer.twitter.com/en/docs/twitter-for-websites/log-in-with-twitter/login-in-with-twitter.html rather than requiring each individual to register a developer account and their own app. But this has to be implemented by the plugin developer.

The page I need help with: [log in to see the link]