Is your YouTube or Twitch no longer connected to your Lurkit account? This is how to fix that.
This can happen when you change your passwords or make any other authentication-related changes on Twitch or YouTube. You need to reauthenticate your connections on Lurkit. First, log in, go to your profile picture on the top right of the screen and click it. Then click on My Connections, and finally you should see a button to Re-Authenticate your Twitch/YouTube connections