Realtime updates stopped working on existing app

const subscription = client
      .from("agent_query")
      .on("*", (payload) => {
        console.log("got a payload", payload); //never triggers
}).subscribe();
console.log("initial state", subscription.state); //prints joining
    subscription.onError(() => {
      console.log("error!"); // never triggers
    });
    subscription.onClose(() => {
      console.log("closed!"); //never triggers
    });
    subscription.onMessage(() => {
      console.log("message!"); // never triggers
    });
    setInterval(() => {
      console.log(subscription.state); // always prints "joined", so it succesfully joined but gets no messages
    }, 2000);