Streaming API: 'Avatar not found' error when starting streaming session

Hello, I'm encountering an issue while trying to use Streaming API. I've created an interactive avatar, but I'm unable to start a streaming session with it.
When I send a request to the

https://api.heygen.com/v1/streaming.new

endpoint using my interactive avatar ID, I receive an error response: {"code":10013,"message":"avatar not found"} I've also tried to retrieve my avatar IDs using the

https://api.heygen.com/v1/streaming/avatar.list

endpoint, but I'm unable to get the ID of the avatar I created. For context, I'm currently on the Creator Plan and I'm using a Trial Token.
Is there anything specific I need to do to make my interactive avatar available from API?