Element Desktop
  1. Download and install Element Desktop.
  2. Press the "Sign In" button.
  3. To the right of where the current homeserver is indicated, click "Edit".
  4. Check the "Other Homeserver" option in the prompt.
  5. Input https://halogen.city as your Homeserver URL, then hit "Continue".
  6. Enter your username and password, then click the "Sign In" button.