Cant post to CloudMQTT

Im not sure if this is the right place to post this but their support email is no longer working. When I try to create a Topic on the websocket UI And i click Send, nothing comes up under Topic/Message. I have tried refreshing, different browsers, delete history.

CloudMQTT

But from my app i can successfully subscribe to the topic and publish a message, and again it does not show up in the WebSocket UI.

Why could this be? Sorry again if this is not the right place to post.

Thanks