Issue with Interactive Avatar Streaming - Video Not Playing After WebSocket Connection

Hello HeyGen Support Team,

I am currently integrating HeyGen's Interactive Avatar Streaming into my Next.js application.
I have successfully obtained the WebSocket URL (wss://heygen-feapbkvq.livekit.cloud) and a valid LiveKit token. However, the video does not play even though:

The WebSocket URL is generated correctly.
The video player appears with a play button.
Clicking "Play" does nothing—the video does not start.
I have already consumed 2 credits, but no video has been displayed.
Debugging Steps I Have Taken:
✔ Verified that I am correctly using the LiveKit SDK.
✔ Confirmed that the WebSocket and token are received from the API.
✔ Checked the browser console for any LiveKit errors (none so far).
✔ Tried manually connecting to wss://heygen-feapbkvq.livekit.cloud but got no video track.

Questions:
Does the LiveKit stream require additional configuration for playback?
Is there a way to check if the avatar session is active on your end?
How can I prevent credits from being consumed if the video is not playing?
I would appreciate your help in resolving this issue as soon as possible. Please let me know if you need additional details.

Thank you!