This only works on v3

1. You will first need to create a Twitter (X) developer account at https://developer.twitter.com/en/portal/petition/essential/basic-info
2. Go to Projects & Apps
3. In the Settings of your new App, click on User authentication settings -> Set Up
   1. See authentication settings below in image
   2. Save
4. Go to the Keys and Tokens tab.
5. Regenerate the API secret and key
   1. Save these for later
6. Go back into PostyBirb.
7. Create a new Twitter account in PostyBirb.
8. Provide the Key and Secret to authenticate.
9. Press Save (REQUIRED)
10. Then login to your Twitter account.
11. Allow your App.
12. Paste the PIN provided and click "Authenticate"