Starting groups often have this problem, so no worries. People often feel a tension as being something heavy/drastic. In Holacracy a tension is a felt sense between current reality and a sensed potential. In other words something that you see now and that could be better/different.
To help the people, as a Facilitator, you can ask questions like: “what can be improved?” or “Is there something missing in our structure?”. Also lead by example and have the Lead Link work with you to show the team how it works.