I want to use CamTwist on Jitsi but Jitsi isnt recognizing CamTwist as an external camera. Can anyone help me with this?

I want to use CamTwist on Jitsi but Jitsi isnt recognizing CamTwist as an external camera. Can anyone help me with this? I want to live stream interviews with a green screen using Jitisi. Thank you!