Twitter login

Definitely, we have.
You can find the links to setup Twitter (and other social networks) app by clicking the info icon before the API Key/Client ID option in Social Login section at Super Socializer > Social Login page in admin panel.
We are mentioning those here too:
Setup Twitter App: https://support.heateor.com/how-to-get-twitter-api-key-and-secret/

Let us know your website url if you are still unable to get over the problem.